Bariatric Surgery

For adults with obesity and uncontrolled hypertension, bariatric surgery is an effective and durable strategy to control high blood pressure (BP), final, 5-year follow-up data from the GATEWAY trial suggested.

In the trial, those who underwent bariatric surgery had lower body mass index (BMI) and were on fewer antihypertensive medications after 5 years while maintaining normal BP than those who only used antihypertensive medications.

The results show that “bariatric and metabolic surgery can be very effective in the treatment of patients with obesity and hypertension in the long term,” chief investigator Carlos Aurelio Schiavon, MD, with the Research Institute, Heart Hospital, São Paulo, Brazil, told this news organization. 

“The most important clinical implication of this trial is that we must treat obesity to accomplish success when treating patients with cardiovascular diseases, such as hypertension and obesity,” Dr. Schiavon said.

The study was published online on February 5, 2024, in the Journal of the American College of Cardiology. 
 

A Gateway to Lasting BP Control

GATEWAY enrolled 100 adults (76% women) with grade 1/2 obesity (BMI, 30 to < 40 kg/m²; mean, 37 kg/m²) who were on at least two antihypertensive medications at maximum doses at baseline.

Half were randomly allocated to laparoscopic Roux-en-Y gastric-bypass surgery (RYGB) plus medications and half to medication alone. The primary outcome was at least a 30% reduction of antihypertensive medications while maintaining BP < 140/90 mm Hg. Five-year results were based on 37 patients in the surgery group and 32 in the medication only group. 

After 5 years, BMI was 28.01 kg/m² for those who had surgery vs 36.40 kg/m² for those on medication alone (P < .001).

Patients who underwent RYGB had an 80.7% reduction in the number of antihypertensive medications they were taking while maintaining BP < 140/90 mm Hg compared with a 13.7% reduction in those on medication alone.

After 5 years, surgery patients were taking a mean of 0.80 antihypertensive medications vs 2.97 in the medication only group to control BP at or below the target. 

Despite using less antihypertensive medications in the RYGB, ambulatory BP monitoring data revealed similar 24-hour, daytime, and nighttime BP profiles compared with medication alone. 

The rate of hypertension remission (controlled BP without medication) was nearly 20-fold higher in the surgery group than in the medication only group (46.9% vs 2.4%; P < .001).

In addition, the rate of apparent resistant hypertension was lower with than without surgery (0% vs 15.2%). The surgery group also showed evidence of less atrial remodeling. 

The 5-year results were consistent with the 1-year GATEWAY results Dr. Schiavon presented at the American Heart Association 2017 scientific sessions, as reported by this news organization. They also mirrored the results reported at 3 years. 

Limitations of the study include its single-center, open-label design with a small sample size and loss of follow-up in some patients.

“Taken together, these results support the long-term effective role of bariatric surgery in reducing the burden of hypertension and related polypharmacy, which is frequently observed in patients with obesity and is a cause of concern for them,” the authors wrote. 

“In clinical practice, obesity is an overlooked condition. As a consequence, there is a frequent failure in approaching obesity as a crucial step for mitigating the risk of important cardiovascular risk factors including hypertension. Our results underscore the importance of approaching obesity in reducing hypertension rates,” they added. 
 

Important Data, Lingering Questions 

The coauthors of an accompanying editorial said this study provides “important long-term data on the benefits of gastric bypass on weight loss and blood pressure control, but questions remain.”

Yet, Michael Hall, MD, MSc, with University of Mississippi Medical Center in Jackson, and coauthors noted that the study only included patients undergoing RYGB; it remains unclear if other bariatric surgery procedures would have the same long-term results.

“Sleeve gastrectomy has become more common than RYGB because it is less complex and has earlier recovery and similar effectiveness for treating obesity and type 2 diabetes,” they pointed out. “Further comparative randomized controlled trials are needed to determine whether sleeve gastrectomy is as effective as RYGB for long-term BP control.”

As reported previously by this news organization, in SLEEVEPASS, there was greater weight loss and higher likelihood of hypertension remission with RYGB than with sleeve gastrectomy (24% vs 8%; P = .04), although BP control was not the primary outcome. 

The GATEWAY study was supported by a grant from Ethicon. Dr. Schiavon received a research grant from Ethicon and has received lecture fees from Ethicon and Medtronic. The editorial writers had no relevant disclosures. 
 

A version of this article appeared on Medscape.com.

For adults with obesity and uncontrolled hypertension, bariatric surgery is an effective and durable strategy to control high blood pressure (BP), final, 5-year follow-up data from the GATEWAY trial suggested.

In the trial, those who underwent bariatric surgery had lower body mass index (BMI) and were on fewer antihypertensive medications after 5 years while maintaining normal BP than those who only used antihypertensive medications.

The results show that “bariatric and metabolic surgery can be very effective in the treatment of patients with obesity and hypertension in the long term,” chief investigator Carlos Aurelio Schiavon, MD, with the Research Institute, Heart Hospital, São Paulo, Brazil, told this news organization. 

“The most important clinical implication of this trial is that we must treat obesity to accomplish success when treating patients with cardiovascular diseases, such as hypertension and obesity,” Dr. Schiavon said.

The study was published online on February 5, 2024, in the Journal of the American College of Cardiology. 
 

A Gateway to Lasting BP Control

GATEWAY enrolled 100 adults (76% women) with grade 1/2 obesity (BMI, 30 to < 40 kg/m²; mean, 37 kg/m²) who were on at least two antihypertensive medications at maximum doses at baseline.

Half were randomly allocated to laparoscopic Roux-en-Y gastric-bypass surgery (RYGB) plus medications and half to medication alone. The primary outcome was at least a 30% reduction of antihypertensive medications while maintaining BP < 140/90 mm Hg. Five-year results were based on 37 patients in the surgery group and 32 in the medication only group. 

After 5 years, BMI was 28.01 kg/m² for those who had surgery vs 36.40 kg/m² for those on medication alone (P < .001).

Patients who underwent RYGB had an 80.7% reduction in the number of antihypertensive medications they were taking while maintaining BP < 140/90 mm Hg compared with a 13.7% reduction in those on medication alone.

After 5 years, surgery patients were taking a mean of 0.80 antihypertensive medications vs 2.97 in the medication only group to control BP at or below the target. 

Despite using less antihypertensive medications in the RYGB, ambulatory BP monitoring data revealed similar 24-hour, daytime, and nighttime BP profiles compared with medication alone. 

The rate of hypertension remission (controlled BP without medication) was nearly 20-fold higher in the surgery group than in the medication only group (46.9% vs 2.4%; P < .001).

In addition, the rate of apparent resistant hypertension was lower with than without surgery (0% vs 15.2%). The surgery group also showed evidence of less atrial remodeling. 

The 5-year results were consistent with the 1-year GATEWAY results Dr. Schiavon presented at the American Heart Association 2017 scientific sessions, as reported by this news organization. They also mirrored the results reported at 3 years. 

Limitations of the study include its single-center, open-label design with a small sample size and loss of follow-up in some patients.

“Taken together, these results support the long-term effective role of bariatric surgery in reducing the burden of hypertension and related polypharmacy, which is frequently observed in patients with obesity and is a cause of concern for them,” the authors wrote. 

“In clinical practice, obesity is an overlooked condition. As a consequence, there is a frequent failure in approaching obesity as a crucial step for mitigating the risk of important cardiovascular risk factors including hypertension. Our results underscore the importance of approaching obesity in reducing hypertension rates,” they added. 
 

Important Data, Lingering Questions 

The coauthors of an accompanying editorial said this study provides “important long-term data on the benefits of gastric bypass on weight loss and blood pressure control, but questions remain.”

Yet, Michael Hall, MD, MSc, with University of Mississippi Medical Center in Jackson, and coauthors noted that the study only included patients undergoing RYGB; it remains unclear if other bariatric surgery procedures would have the same long-term results.

“Sleeve gastrectomy has become more common than RYGB because it is less complex and has earlier recovery and similar effectiveness for treating obesity and type 2 diabetes,” they pointed out. “Further comparative randomized controlled trials are needed to determine whether sleeve gastrectomy is as effective as RYGB for long-term BP control.”

As reported previously by this news organization, in SLEEVEPASS, there was greater weight loss and higher likelihood of hypertension remission with RYGB than with sleeve gastrectomy (24% vs 8%; P = .04), although BP control was not the primary outcome. 

The GATEWAY study was supported by a grant from Ethicon. Dr. Schiavon received a research grant from Ethicon and has received lecture fees from Ethicon and Medtronic. The editorial writers had no relevant disclosures. 
 

A version of this article appeared on Medscape.com.

For adults with obesity and uncontrolled hypertension, bariatric surgery is an effective and durable strategy to control high blood pressure (BP), final, 5-year follow-up data from the GATEWAY trial suggested.

In the trial, those who underwent bariatric surgery had lower body mass index (BMI) and were on fewer antihypertensive medications after 5 years while maintaining normal BP than those who only used antihypertensive medications.

The results show that “bariatric and metabolic surgery can be very effective in the treatment of patients with obesity and hypertension in the long term,” chief investigator Carlos Aurelio Schiavon, MD, with the Research Institute, Heart Hospital, São Paulo, Brazil, told this news organization. 

“The most important clinical implication of this trial is that we must treat obesity to accomplish success when treating patients with cardiovascular diseases, such as hypertension and obesity,” Dr. Schiavon said.

The study was published online on February 5, 2024, in the Journal of the American College of Cardiology. 
 

A Gateway to Lasting BP Control

GATEWAY enrolled 100 adults (76% women) with grade 1/2 obesity (BMI, 30 to < 40 kg/m²; mean, 37 kg/m²) who were on at least two antihypertensive medications at maximum doses at baseline.

Half were randomly allocated to laparoscopic Roux-en-Y gastric-bypass surgery (RYGB) plus medications and half to medication alone. The primary outcome was at least a 30% reduction of antihypertensive medications while maintaining BP < 140/90 mm Hg. Five-year results were based on 37 patients in the surgery group and 32 in the medication only group. 

After 5 years, BMI was 28.01 kg/m² for those who had surgery vs 36.40 kg/m² for those on medication alone (P < .001).

Patients who underwent RYGB had an 80.7% reduction in the number of antihypertensive medications they were taking while maintaining BP < 140/90 mm Hg compared with a 13.7% reduction in those on medication alone.

After 5 years, surgery patients were taking a mean of 0.80 antihypertensive medications vs 2.97 in the medication only group to control BP at or below the target. 

Despite using less antihypertensive medications in the RYGB, ambulatory BP monitoring data revealed similar 24-hour, daytime, and nighttime BP profiles compared with medication alone. 

The rate of hypertension remission (controlled BP without medication) was nearly 20-fold higher in the surgery group than in the medication only group (46.9% vs 2.4%; P < .001).

In addition, the rate of apparent resistant hypertension was lower with than without surgery (0% vs 15.2%). The surgery group also showed evidence of less atrial remodeling. 

The 5-year results were consistent with the 1-year GATEWAY results Dr. Schiavon presented at the American Heart Association 2017 scientific sessions, as reported by this news organization. They also mirrored the results reported at 3 years. 

Limitations of the study include its single-center, open-label design with a small sample size and loss of follow-up in some patients.

“Taken together, these results support the long-term effective role of bariatric surgery in reducing the burden of hypertension and related polypharmacy, which is frequently observed in patients with obesity and is a cause of concern for them,” the authors wrote. 

“In clinical practice, obesity is an overlooked condition. As a consequence, there is a frequent failure in approaching obesity as a crucial step for mitigating the risk of important cardiovascular risk factors including hypertension. Our results underscore the importance of approaching obesity in reducing hypertension rates,” they added. 
 

Important Data, Lingering Questions 

The coauthors of an accompanying editorial said this study provides “important long-term data on the benefits of gastric bypass on weight loss and blood pressure control, but questions remain.”

Yet, Michael Hall, MD, MSc, with University of Mississippi Medical Center in Jackson, and coauthors noted that the study only included patients undergoing RYGB; it remains unclear if other bariatric surgery procedures would have the same long-term results.

“Sleeve gastrectomy has become more common than RYGB because it is less complex and has earlier recovery and similar effectiveness for treating obesity and type 2 diabetes,” they pointed out. “Further comparative randomized controlled trials are needed to determine whether sleeve gastrectomy is as effective as RYGB for long-term BP control.”

As reported previously by this news organization, in SLEEVEPASS, there was greater weight loss and higher likelihood of hypertension remission with RYGB than with sleeve gastrectomy (24% vs 8%; P = .04), although BP control was not the primary outcome. 

The GATEWAY study was supported by a grant from Ethicon. Dr. Schiavon received a research grant from Ethicon and has received lecture fees from Ethicon and Medtronic. The editorial writers had no relevant disclosures. 
 

A version of this article appeared on Medscape.com.

A few weeks ago, I made a patient who lost 100 pounds following a sleeve gastrectomy 9 months prior feel bad because I told her she lost too much weight. As I spoke to her, I realized that she found it hard to make life changes and that the surgery was a huge aide in changing her life and her lifestyle. I ended up apologizing for initially saying she lost too much weight.

For the first time in her life, she was successful in losing weight and keeping it off. The surgery allowed her body to defend a lower body weight by altering the secretion of gut hormones that lead to satiety in the brain. It’s not her fault that her body responded so well!

I asked her to be on my next orientation virtual meeting with prospective weight management patients to urge those with a body mass index (BMI) > 40 to consider bariatric surgery as the most effective durable and safe treatment for their degree of obesity.

Metabolic bariatric surgery, primarily sleeve gastrectomy and Roux-en-Y gastric bypass , alters the gut hormone milieu such that the body defends a lower mass of adipose tissue and a lower weight. We have learned what it takes to alter body weight defense to a healthy lower weight by studying why metabolic bariatric surgery works so well. It turns out that there are several hormones secreted by the gut that allow the brain to register fullness.

One of these gut hormones, glucagon-like peptide (GLP)-1, has been researched as an analog to help reduce body weight by 16% and has also been shown to reduce cardiovascular risk in the SELECT trial, as published in The New England Journal of Medicine (NEJM).

It’s the first weight loss medication to be shown in a cardiovascular outcomes trial to be superior to placebo in reduction of major cardiovascular events, including cardiovascular deaths, nonfatal myocardial infarction, and nonfatal stroke. The results presented at the 2023 American Heart Association meetings in Philadelphia ended in wholehearted applause by a “standing only” audience even before the presentation’s conclusion.

As we pave the way for nutrient-stimulated hormone (NuSH) therapies to be prescribed to all Americans with a BMI > 30 to improve health, we need to remember what these medications actually do. We used to think that metabolic bariatric surgery worked by restricting the stomach contents and malabsorbing nutrients. We now know that the surgeries work by altering NuSH secretion, allowing for less secretion of the hunger hormone ghrelin and more secretion of GLP-1, glucose-dependent insulinotropic polypeptide (GIP), peptide YY (PYY), cholecystokinin (CCK), oxyntomodulin (OXM), and other satiety hormones with less food ingestion.

They have pleiotropic effects on many organ systems in the body, including the brain, heart, adipose tissue, and liver. They decrease inflammation and also increase satiety and delay gastric emptying. None of these effects automatically produce weight loss, but they certainly aid in the adoption of a healthier body weight and better health. The weight loss occurs because these medications steer the body toward behavioral changes that promote weight loss.

As we delve into the SELECT trial results, a 20% reduction in major cardiovascular events was accompanied by an average weight loss of 9.6%, without a behavioral component added to either the placebo or intervention arms, as is usual in antiobesity agent trials.

Does this mean that primary care providers (PCPs) don’t have to educate patients on behavior change, diet, and exercise therapy? Well, if we consider obesity a disease as we do type 2 diabetes and dyslipidemia or hypertension, then no — PCPs don’t have to, just like they don’t in treating these other diseases.

However, we should rethink this practice. The recently published SURMOUNT-3 trial looked at another NuSH, tirzepatide, with intensive behavioral therapy; it resulted in a 26.6% weight loss, which is comparable to results with bariatric surgery. The SURMOUNT-1 trial of tirzepatide with nonintensive behavioral therapy resulted in a 20.9% weight loss, which is still substantial, but SURMOUNT-3 showed how much more is achievable with robust behavior-change therapy.

In other words, it’s time that PCPs provide education on behavior change to maximize the power of the medications prescribed in practice for the most common diseases suffered in the United States: obesity, type 2 diabetes, cardiovascular disease, and hypertension. These are all chronic, relapsing diseases. Medication alone will improve numbers (weight, blood glucose, A1c, and blood pressure), but a relapsing disease continues relentlessly as patients age to overcome the medications prescribed.

Today I made another patient feel bad because she lost over 100 pounds on semaglutide (Wegovy) 2.4 mg over 1 year, reducing her BMI from 57 to 36. She wanted to keep losing, so I recommended sleeve gastrectomy to lose more weight. I told her she could always restart the Wegovy after the procedure if needed.

We really don’t have an answer to this issue of NuSH therapy not getting to goal and bariatric surgery following medication therapy. The reality is that bariatric surgery should be considered a safe, effective treatment for extreme obesity somewhere along the trajectory of treatments starting with behavior (diet, exercise) and medications. It is still considered a last resort, and for some, just too aggressive.

We have learned much about the incretin hormones and what they can accomplish for obesity from studying bariatric — now called metabolic — surgery. Surgery should be seen as we see stent placement for angina, only more effective for longevity. The COURAGE trial, published in 2007 in NEJM, showed that when compared with medication treatment alone for angina, stent placement plus medications resulted in no difference in mortality after a 7-year follow-up period. Compare this to bariatric surgery, which in many retrospective analyses shows a 20% reduction in cardiovascular mortality after 20-year follow-up (Swedish Obesity Study). In the United States, there are 2 million stent procedures performed per year vs 250,000 bariatric surgical procedures. There are millions of Americans with a BMI > 40 and, yes, millions of Americans with angina. I think I make my point that we need to do more bariatric surgeries to effectively treat extreme obesity.

The solution to this negligent medical practice in obesity treatment is to empower PCPs to treat obesity (at least uncomplicated obesity) and refer to obesity medicine practices for complicated obesity with multiple complications, such as type 2 diabetes and cardiovascular disease, and to refer to obesity medicine practices with a surgical component for BMIs > 40 or > 35 with type 2 diabetes, sleep apnea, and/or cardiovascular disease or other serious conditions.

How do we empower PCPs? Insurance coverage of NuSH therapies due to life-saving properties — as evidenced by the SELECT trial — without prior authorizations; and education on how and why metabolic surgery works, as well as education on behavioral approaches, such as healthy diet and exercise, as a core therapy for all BMI categories.

It’s time.

Caroline Apovian, MD, has disclosed the following relevant financial relationships: Serve(d) as a director, officer, partner, employee, adviser, consultant, or trustee for Altimmune; Cowen and Company; Currax Pharmaceuticals; EPG Communication Holdings; Gelesis, Srl; L-Nutra; and NeuroBo Pharmaceuticals. Received research grant from: National Institutes of Health; Patient-Centered Outcomes Research Institute; and GI Dynamics. Received income in an amount equal to or greater than $250 from: Altimmune; Cowen and Company; NeuroBo Pharmaceuticals; and Novo Nordisk.

A version of this article appeared on Medscape.com.

A few weeks ago, I made a patient who lost 100 pounds following a sleeve gastrectomy 9 months prior feel bad because I told her she lost too much weight. As I spoke to her, I realized that she found it hard to make life changes and that the surgery was a huge aide in changing her life and her lifestyle. I ended up apologizing for initially saying she lost too much weight.

For the first time in her life, she was successful in losing weight and keeping it off. The surgery allowed her body to defend a lower body weight by altering the secretion of gut hormones that lead to satiety in the brain. It’s not her fault that her body responded so well!

I asked her to be on my next orientation virtual meeting with prospective weight management patients to urge those with a body mass index (BMI) > 40 to consider bariatric surgery as the most effective durable and safe treatment for their degree of obesity.

Metabolic bariatric surgery, primarily sleeve gastrectomy and Roux-en-Y gastric bypass , alters the gut hormone milieu such that the body defends a lower mass of adipose tissue and a lower weight. We have learned what it takes to alter body weight defense to a healthy lower weight by studying why metabolic bariatric surgery works so well. It turns out that there are several hormones secreted by the gut that allow the brain to register fullness.

One of these gut hormones, glucagon-like peptide (GLP)-1, has been researched as an analog to help reduce body weight by 16% and has also been shown to reduce cardiovascular risk in the SELECT trial, as published in The New England Journal of Medicine (NEJM).

It’s the first weight loss medication to be shown in a cardiovascular outcomes trial to be superior to placebo in reduction of major cardiovascular events, including cardiovascular deaths, nonfatal myocardial infarction, and nonfatal stroke. The results presented at the 2023 American Heart Association meetings in Philadelphia ended in wholehearted applause by a “standing only” audience even before the presentation’s conclusion.

As we pave the way for nutrient-stimulated hormone (NuSH) therapies to be prescribed to all Americans with a BMI > 30 to improve health, we need to remember what these medications actually do. We used to think that metabolic bariatric surgery worked by restricting the stomach contents and malabsorbing nutrients. We now know that the surgeries work by altering NuSH secretion, allowing for less secretion of the hunger hormone ghrelin and more secretion of GLP-1, glucose-dependent insulinotropic polypeptide (GIP), peptide YY (PYY), cholecystokinin (CCK), oxyntomodulin (OXM), and other satiety hormones with less food ingestion.

They have pleiotropic effects on many organ systems in the body, including the brain, heart, adipose tissue, and liver. They decrease inflammation and also increase satiety and delay gastric emptying. None of these effects automatically produce weight loss, but they certainly aid in the adoption of a healthier body weight and better health. The weight loss occurs because these medications steer the body toward behavioral changes that promote weight loss.

As we delve into the SELECT trial results, a 20% reduction in major cardiovascular events was accompanied by an average weight loss of 9.6%, without a behavioral component added to either the placebo or intervention arms, as is usual in antiobesity agent trials.

Does this mean that primary care providers (PCPs) don’t have to educate patients on behavior change, diet, and exercise therapy? Well, if we consider obesity a disease as we do type 2 diabetes and dyslipidemia or hypertension, then no — PCPs don’t have to, just like they don’t in treating these other diseases.

However, we should rethink this practice. The recently published SURMOUNT-3 trial looked at another NuSH, tirzepatide, with intensive behavioral therapy; it resulted in a 26.6% weight loss, which is comparable to results with bariatric surgery. The SURMOUNT-1 trial of tirzepatide with nonintensive behavioral therapy resulted in a 20.9% weight loss, which is still substantial, but SURMOUNT-3 showed how much more is achievable with robust behavior-change therapy.

In other words, it’s time that PCPs provide education on behavior change to maximize the power of the medications prescribed in practice for the most common diseases suffered in the United States: obesity, type 2 diabetes, cardiovascular disease, and hypertension. These are all chronic, relapsing diseases. Medication alone will improve numbers (weight, blood glucose, A1c, and blood pressure), but a relapsing disease continues relentlessly as patients age to overcome the medications prescribed.

Today I made another patient feel bad because she lost over 100 pounds on semaglutide (Wegovy) 2.4 mg over 1 year, reducing her BMI from 57 to 36. She wanted to keep losing, so I recommended sleeve gastrectomy to lose more weight. I told her she could always restart the Wegovy after the procedure if needed.

We really don’t have an answer to this issue of NuSH therapy not getting to goal and bariatric surgery following medication therapy. The reality is that bariatric surgery should be considered a safe, effective treatment for extreme obesity somewhere along the trajectory of treatments starting with behavior (diet, exercise) and medications. It is still considered a last resort, and for some, just too aggressive.

We have learned much about the incretin hormones and what they can accomplish for obesity from studying bariatric — now called metabolic — surgery. Surgery should be seen as we see stent placement for angina, only more effective for longevity. The COURAGE trial, published in 2007 in NEJM, showed that when compared with medication treatment alone for angina, stent placement plus medications resulted in no difference in mortality after a 7-year follow-up period. Compare this to bariatric surgery, which in many retrospective analyses shows a 20% reduction in cardiovascular mortality after 20-year follow-up (Swedish Obesity Study). In the United States, there are 2 million stent procedures performed per year vs 250,000 bariatric surgical procedures. There are millions of Americans with a BMI > 40 and, yes, millions of Americans with angina. I think I make my point that we need to do more bariatric surgeries to effectively treat extreme obesity.

The solution to this negligent medical practice in obesity treatment is to empower PCPs to treat obesity (at least uncomplicated obesity) and refer to obesity medicine practices for complicated obesity with multiple complications, such as type 2 diabetes and cardiovascular disease, and to refer to obesity medicine practices with a surgical component for BMIs > 40 or > 35 with type 2 diabetes, sleep apnea, and/or cardiovascular disease or other serious conditions.

How do we empower PCPs? Insurance coverage of NuSH therapies due to life-saving properties — as evidenced by the SELECT trial — without prior authorizations; and education on how and why metabolic surgery works, as well as education on behavioral approaches, such as healthy diet and exercise, as a core therapy for all BMI categories.

It’s time.

Caroline Apovian, MD, has disclosed the following relevant financial relationships: Serve(d) as a director, officer, partner, employee, adviser, consultant, or trustee for Altimmune; Cowen and Company; Currax Pharmaceuticals; EPG Communication Holdings; Gelesis, Srl; L-Nutra; and NeuroBo Pharmaceuticals. Received research grant from: National Institutes of Health; Patient-Centered Outcomes Research Institute; and GI Dynamics. Received income in an amount equal to or greater than $250 from: Altimmune; Cowen and Company; NeuroBo Pharmaceuticals; and Novo Nordisk.

A version of this article appeared on Medscape.com.

A few weeks ago, I made a patient who lost 100 pounds following a sleeve gastrectomy 9 months prior feel bad because I told her she lost too much weight. As I spoke to her, I realized that she found it hard to make life changes and that the surgery was a huge aide in changing her life and her lifestyle. I ended up apologizing for initially saying she lost too much weight.

For the first time in her life, she was successful in losing weight and keeping it off. The surgery allowed her body to defend a lower body weight by altering the secretion of gut hormones that lead to satiety in the brain. It’s not her fault that her body responded so well!

I asked her to be on my next orientation virtual meeting with prospective weight management patients to urge those with a body mass index (BMI) > 40 to consider bariatric surgery as the most effective durable and safe treatment for their degree of obesity.

Metabolic bariatric surgery, primarily sleeve gastrectomy and Roux-en-Y gastric bypass , alters the gut hormone milieu such that the body defends a lower mass of adipose tissue and a lower weight. We have learned what it takes to alter body weight defense to a healthy lower weight by studying why metabolic bariatric surgery works so well. It turns out that there are several hormones secreted by the gut that allow the brain to register fullness.

One of these gut hormones, glucagon-like peptide (GLP)-1, has been researched as an analog to help reduce body weight by 16% and has also been shown to reduce cardiovascular risk in the SELECT trial, as published in The New England Journal of Medicine (NEJM).

It’s the first weight loss medication to be shown in a cardiovascular outcomes trial to be superior to placebo in reduction of major cardiovascular events, including cardiovascular deaths, nonfatal myocardial infarction, and nonfatal stroke. The results presented at the 2023 American Heart Association meetings in Philadelphia ended in wholehearted applause by a “standing only” audience even before the presentation’s conclusion.

As we pave the way for nutrient-stimulated hormone (NuSH) therapies to be prescribed to all Americans with a BMI > 30 to improve health, we need to remember what these medications actually do. We used to think that metabolic bariatric surgery worked by restricting the stomach contents and malabsorbing nutrients. We now know that the surgeries work by altering NuSH secretion, allowing for less secretion of the hunger hormone ghrelin and more secretion of GLP-1, glucose-dependent insulinotropic polypeptide (GIP), peptide YY (PYY), cholecystokinin (CCK), oxyntomodulin (OXM), and other satiety hormones with less food ingestion.

They have pleiotropic effects on many organ systems in the body, including the brain, heart, adipose tissue, and liver. They decrease inflammation and also increase satiety and delay gastric emptying. None of these effects automatically produce weight loss, but they certainly aid in the adoption of a healthier body weight and better health. The weight loss occurs because these medications steer the body toward behavioral changes that promote weight loss.

As we delve into the SELECT trial results, a 20% reduction in major cardiovascular events was accompanied by an average weight loss of 9.6%, without a behavioral component added to either the placebo or intervention arms, as is usual in antiobesity agent trials.

Does this mean that primary care providers (PCPs) don’t have to educate patients on behavior change, diet, and exercise therapy? Well, if we consider obesity a disease as we do type 2 diabetes and dyslipidemia or hypertension, then no — PCPs don’t have to, just like they don’t in treating these other diseases.

However, we should rethink this practice. The recently published SURMOUNT-3 trial looked at another NuSH, tirzepatide, with intensive behavioral therapy; it resulted in a 26.6% weight loss, which is comparable to results with bariatric surgery. The SURMOUNT-1 trial of tirzepatide with nonintensive behavioral therapy resulted in a 20.9% weight loss, which is still substantial, but SURMOUNT-3 showed how much more is achievable with robust behavior-change therapy.

In other words, it’s time that PCPs provide education on behavior change to maximize the power of the medications prescribed in practice for the most common diseases suffered in the United States: obesity, type 2 diabetes, cardiovascular disease, and hypertension. These are all chronic, relapsing diseases. Medication alone will improve numbers (weight, blood glucose, A1c, and blood pressure), but a relapsing disease continues relentlessly as patients age to overcome the medications prescribed.

Today I made another patient feel bad because she lost over 100 pounds on semaglutide (Wegovy) 2.4 mg over 1 year, reducing her BMI from 57 to 36. She wanted to keep losing, so I recommended sleeve gastrectomy to lose more weight. I told her she could always restart the Wegovy after the procedure if needed.

We really don’t have an answer to this issue of NuSH therapy not getting to goal and bariatric surgery following medication therapy. The reality is that bariatric surgery should be considered a safe, effective treatment for extreme obesity somewhere along the trajectory of treatments starting with behavior (diet, exercise) and medications. It is still considered a last resort, and for some, just too aggressive.

We have learned much about the incretin hormones and what they can accomplish for obesity from studying bariatric — now called metabolic — surgery. Surgery should be seen as we see stent placement for angina, only more effective for longevity. The COURAGE trial, published in 2007 in NEJM, showed that when compared with medication treatment alone for angina, stent placement plus medications resulted in no difference in mortality after a 7-year follow-up period. Compare this to bariatric surgery, which in many retrospective analyses shows a 20% reduction in cardiovascular mortality after 20-year follow-up (Swedish Obesity Study). In the United States, there are 2 million stent procedures performed per year vs 250,000 bariatric surgical procedures. There are millions of Americans with a BMI > 40 and, yes, millions of Americans with angina. I think I make my point that we need to do more bariatric surgeries to effectively treat extreme obesity.

The solution to this negligent medical practice in obesity treatment is to empower PCPs to treat obesity (at least uncomplicated obesity) and refer to obesity medicine practices for complicated obesity with multiple complications, such as type 2 diabetes and cardiovascular disease, and to refer to obesity medicine practices with a surgical component for BMIs > 40 or > 35 with type 2 diabetes, sleep apnea, and/or cardiovascular disease or other serious conditions.

How do we empower PCPs? Insurance coverage of NuSH therapies due to life-saving properties — as evidenced by the SELECT trial — without prior authorizations; and education on how and why metabolic surgery works, as well as education on behavioral approaches, such as healthy diet and exercise, as a core therapy for all BMI categories.

It’s time.

Caroline Apovian, MD, has disclosed the following relevant financial relationships: Serve(d) as a director, officer, partner, employee, adviser, consultant, or trustee for Altimmune; Cowen and Company; Currax Pharmaceuticals; EPG Communication Holdings; Gelesis, Srl; L-Nutra; and NeuroBo Pharmaceuticals. Received research grant from: National Institutes of Health; Patient-Centered Outcomes Research Institute; and GI Dynamics. Received income in an amount equal to or greater than $250 from: Altimmune; Cowen and Company; NeuroBo Pharmaceuticals; and Novo Nordisk.

A version of this article appeared on Medscape.com.

VANCOUVER — Glucagon-like peptide-1 (GLP-1) agonists, like semaglutide, liraglutide, and the newly US Food and Drug Administration–approved tirzepatide, not only are gaining popularity among the public for weight loss but also are the focus of considerable attention from gastroenterology researchers.

The robust interest in GLP-1 agonists was on full display here at the annual meeting of the American College of Gastroenterology, with investigators sharing results on which agent is most effective for weight loss, how they compare to bariatric surgery for weight loss or prevention of metabolic dysfunction–associated steatotic liver disease, and their potential role to prevent regain after weight-loss surgery.
 

Head-to-Head Comparison

Tirzepatide 15 mg emerged as superior to other GLP-1 agonists for weight loss, for example, in a network meta-analysis of randomized controlled trials looking into obesity management.

Tirzepatide 15 mg was associated with the most effective mean weight loss at just over 15% when Jena Velji-Ibrahim, MD, and colleagues combined data from 14 studies with 18,714 participants with overweight or obesity but without diabetes.

Next up in order of weight-loss efficacy was tirzepatide 10 mg with 13% mean weight loss, semaglutide 2.4 mg with just over 11% mean weight loss, and tirzepatide 5 mg with almost 10% mean weight loss. The only outlier was dulaglutide 0.75 mg, which was linked to about 8% weight gain.

“While clinical trials have been conducted to assess the weight-loss efficacy of GLP-1 agonists, there has been limited head-to-head comparisons, and the data that has been obtained has been quite inconsistent,” Dr. Velji-Ibrahim said when presenting results at the meeting.

Researchers found little difference in efficacies between tirzepatide 15 mg and 10 mg, suggesting both are a viable option for weight loss, said Dr. Velji-Ibrahim of Prisma Health Greenville Memorial Hospital and University of South Carolina School of Medicine in Greenville.

She also reported similar efficacies between oral semaglutide 50 mg and subcutaneous semaglutide 2.4 mg, “meaning that we have another option for weight management.”

Side effects among the different GLP-1 agonists, and among the same agent at different doses, were not significantly different.
 

Comparison With Bariatric Surgery for Reducing Major Adverse Cardiovascular Events (MACE)

For many years, bariatric surgeons have pointed to the health benefits of weight-loss surgery in the right candidates, including a reduced risk for adverse cardiovascular events.

The weight loss associated with GLP-1 agonists has likewise shown benefits in reducing MACE. However, it remains unclear if one of these weight-loss strategies is better than the other in reducing these outcomes.

To determine this, researchers compared 118,828 people who had bariatric surgery to another propensity-matched group of 118,828 others prescribed GLP-1 agonists. They included adults with a body mass index (BMI) of 35 or higher in the national TriNetX database.

The multicenter, retrospective study revealed bariatric surgery was superior in reducing the risk for heart failure, MACE, and cerebrovascular disease at 3, 5, 7, and 10 years. At 10 years, for example, bariatric surgery was associated with 31% fewer composite cardiovascular events than the GLP-1 agonists.

“Our results suggest that bariatric surgery is more effective than GLP-1 analogs in preventing adverse cardiovascular events in obese patients,” Ayowumi A. Adekolu, MD, an internal medicine resident at West Virginia School of Medicine in Morgantown, said in audio comments accompanying his ePoster at the meeting. “Although these findings highlight the benefit of bariatric surgery in mitigating adverse cardiovascular events, well-designed prospective studies are necessary to confirm these benefits in this patient population.”

Possible Role in Fatty Liver Disease Prevention
 

In another large multicenter study from the same institution, Ethan M. Cohen, MD, along with co-author Dr. Adekolu and others, compared the effectiveness of bariatric surgery to GLP-1 agonists for preventing nonalcoholic fatty liver disease (NAFLD). Since the study was conducted, the official name of NAFLD has changed to metabolic dysfunction–associated steatotic liver disease.

Dr. Cohen and colleagues evaluated data from the TriNetX database and included adults with a BMI of 35 or higher. They propensity matched 124,022 people who had sleeve gastrectomy or Roux-en-Y gastric bypass to another 124,022 others prescribed GLP-1 agonists. Again, they looked at outcomes at 3, 5, 7, and 10 years.

They found bariatric surgery superior to GLP-1 agonists for reducing the risk of developing NAFLD. Relative risk reduction was 25% at 3 years, 28% at 5 years, 27% at 7 years, and 26% at 10 years.

Although not to the same extent as surgery in this study, GLP-1–associated weight loss did reduce risks as well.

“An important aspect of this is that for some of these people, bariatric surgery is not even an option,” Dr. Cohen said in an interview, citing as an example those who do not meet the criteria for surgery.

Dr. Cohen and colleagues plan to continue the study with a larger number of participants.
 

Real-World Weight Regain

In another instance where a surgical procedure trumped GLP-1 agonists, revisional endoscopic sleeve gastroplasty (ESG) offered significantly higher weight loss than GLP-1 agonists among people who regained weight following initial weight-loss surgery, according to a case-control real-world study presented at the meeting.

“Laparoscopic sleeve gastrectomy [LSG] is a frequently performed bariatric surgery worldwide resulting in significant weight loss and improvement in obesity-related comorbidities,” said Firas Bahdi, MD, gastroenterology fellow at the David Geffen School of Medicine at University of California, Los Angeles. “Despite its success, around one third of patients, unfortunately, develop weight regain warranting intervention.”

Dr. Bahdi and colleagues retrospectively studied 68 adults prescribed subcutaneous semaglutide or tirzepatide after LSG, another 20 who had ESG for weight regain after LSG, and 87 controls with intact stomachs who also took GLP-1 agonists for weight loss.

They found that the ESG group experienced a significantly higher percentage of total body weight loss at 3 months than the GLP-1 group (10% vs 4.3%, respectively; P = .0001). Similarly, at the 6-month follow-up, the ESG group experienced 11.5% total body weight loss compared to 6.8% in the GLP-1 group (P = .03).

The GLP-1 after LSG group still fared better than the GLP-1 control group of people who never had surgery. Total body weight loss was 4.3% vs 5.7% at 3 months (P = .02), 6.8% vs 9.2% at 6 months (P = .02), and 9.2% vs 12.7% at 12 months (P = .03).

“In this real-world experience, revisional ESG offers significantly more weight loss than GLP-1 agonists for patients with weight regain, while also avoiding the challenges of medication refills, making it an attractive option,” Dr. Bahdi said.

Future multicenter studies are warranted to confirm these results and explore physiological explanations, he added.

The study received an Outstanding Research Award in the Obesity Category (Trainee).

Dr. Velji-Ibrahim, Dr. Adekolu, Dr. Cohen, and Dr. Bahdi indicated no relevant financial relationships.

A version of this article appeared on Medscape.com.

VANCOUVER — Glucagon-like peptide-1 (GLP-1) agonists, like semaglutide, liraglutide, and the newly US Food and Drug Administration–approved tirzepatide, not only are gaining popularity among the public for weight loss but also are the focus of considerable attention from gastroenterology researchers.

The robust interest in GLP-1 agonists was on full display here at the annual meeting of the American College of Gastroenterology, with investigators sharing results on which agent is most effective for weight loss, how they compare to bariatric surgery for weight loss or prevention of metabolic dysfunction–associated steatotic liver disease, and their potential role to prevent regain after weight-loss surgery.
 

Head-to-Head Comparison

Tirzepatide 15 mg emerged as superior to other GLP-1 agonists for weight loss, for example, in a network meta-analysis of randomized controlled trials looking into obesity management.

Tirzepatide 15 mg was associated with the most effective mean weight loss at just over 15% when Jena Velji-Ibrahim, MD, and colleagues combined data from 14 studies with 18,714 participants with overweight or obesity but without diabetes.

Next up in order of weight-loss efficacy was tirzepatide 10 mg with 13% mean weight loss, semaglutide 2.4 mg with just over 11% mean weight loss, and tirzepatide 5 mg with almost 10% mean weight loss. The only outlier was dulaglutide 0.75 mg, which was linked to about 8% weight gain.

“While clinical trials have been conducted to assess the weight-loss efficacy of GLP-1 agonists, there has been limited head-to-head comparisons, and the data that has been obtained has been quite inconsistent,” Dr. Velji-Ibrahim said when presenting results at the meeting.

Researchers found little difference in efficacies between tirzepatide 15 mg and 10 mg, suggesting both are a viable option for weight loss, said Dr. Velji-Ibrahim of Prisma Health Greenville Memorial Hospital and University of South Carolina School of Medicine in Greenville.

She also reported similar efficacies between oral semaglutide 50 mg and subcutaneous semaglutide 2.4 mg, “meaning that we have another option for weight management.”

Side effects among the different GLP-1 agonists, and among the same agent at different doses, were not significantly different.
 

Comparison With Bariatric Surgery for Reducing Major Adverse Cardiovascular Events (MACE)

For many years, bariatric surgeons have pointed to the health benefits of weight-loss surgery in the right candidates, including a reduced risk for adverse cardiovascular events.

The weight loss associated with GLP-1 agonists has likewise shown benefits in reducing MACE. However, it remains unclear if one of these weight-loss strategies is better than the other in reducing these outcomes.

To determine this, researchers compared 118,828 people who had bariatric surgery to another propensity-matched group of 118,828 others prescribed GLP-1 agonists. They included adults with a body mass index (BMI) of 35 or higher in the national TriNetX database.

The multicenter, retrospective study revealed bariatric surgery was superior in reducing the risk for heart failure, MACE, and cerebrovascular disease at 3, 5, 7, and 10 years. At 10 years, for example, bariatric surgery was associated with 31% fewer composite cardiovascular events than the GLP-1 agonists.

“Our results suggest that bariatric surgery is more effective than GLP-1 analogs in preventing adverse cardiovascular events in obese patients,” Ayowumi A. Adekolu, MD, an internal medicine resident at West Virginia School of Medicine in Morgantown, said in audio comments accompanying his ePoster at the meeting. “Although these findings highlight the benefit of bariatric surgery in mitigating adverse cardiovascular events, well-designed prospective studies are necessary to confirm these benefits in this patient population.”

Possible Role in Fatty Liver Disease Prevention
 

In another large multicenter study from the same institution, Ethan M. Cohen, MD, along with co-author Dr. Adekolu and others, compared the effectiveness of bariatric surgery to GLP-1 agonists for preventing nonalcoholic fatty liver disease (NAFLD). Since the study was conducted, the official name of NAFLD has changed to metabolic dysfunction–associated steatotic liver disease.

Dr. Cohen and colleagues evaluated data from the TriNetX database and included adults with a BMI of 35 or higher. They propensity matched 124,022 people who had sleeve gastrectomy or Roux-en-Y gastric bypass to another 124,022 others prescribed GLP-1 agonists. Again, they looked at outcomes at 3, 5, 7, and 10 years.

They found bariatric surgery superior to GLP-1 agonists for reducing the risk of developing NAFLD. Relative risk reduction was 25% at 3 years, 28% at 5 years, 27% at 7 years, and 26% at 10 years.

Although not to the same extent as surgery in this study, GLP-1–associated weight loss did reduce risks as well.

“An important aspect of this is that for some of these people, bariatric surgery is not even an option,” Dr. Cohen said in an interview, citing as an example those who do not meet the criteria for surgery.

Dr. Cohen and colleagues plan to continue the study with a larger number of participants.
 

Real-World Weight Regain

In another instance where a surgical procedure trumped GLP-1 agonists, revisional endoscopic sleeve gastroplasty (ESG) offered significantly higher weight loss than GLP-1 agonists among people who regained weight following initial weight-loss surgery, according to a case-control real-world study presented at the meeting.

“Laparoscopic sleeve gastrectomy [LSG] is a frequently performed bariatric surgery worldwide resulting in significant weight loss and improvement in obesity-related comorbidities,” said Firas Bahdi, MD, gastroenterology fellow at the David Geffen School of Medicine at University of California, Los Angeles. “Despite its success, around one third of patients, unfortunately, develop weight regain warranting intervention.”

Dr. Bahdi and colleagues retrospectively studied 68 adults prescribed subcutaneous semaglutide or tirzepatide after LSG, another 20 who had ESG for weight regain after LSG, and 87 controls with intact stomachs who also took GLP-1 agonists for weight loss.

They found that the ESG group experienced a significantly higher percentage of total body weight loss at 3 months than the GLP-1 group (10% vs 4.3%, respectively; P = .0001). Similarly, at the 6-month follow-up, the ESG group experienced 11.5% total body weight loss compared to 6.8% in the GLP-1 group (P = .03).

The GLP-1 after LSG group still fared better than the GLP-1 control group of people who never had surgery. Total body weight loss was 4.3% vs 5.7% at 3 months (P = .02), 6.8% vs 9.2% at 6 months (P = .02), and 9.2% vs 12.7% at 12 months (P = .03).

“In this real-world experience, revisional ESG offers significantly more weight loss than GLP-1 agonists for patients with weight regain, while also avoiding the challenges of medication refills, making it an attractive option,” Dr. Bahdi said.

Future multicenter studies are warranted to confirm these results and explore physiological explanations, he added.

The study received an Outstanding Research Award in the Obesity Category (Trainee).

Dr. Velji-Ibrahim, Dr. Adekolu, Dr. Cohen, and Dr. Bahdi indicated no relevant financial relationships.

A version of this article appeared on Medscape.com.

VANCOUVER — Glucagon-like peptide-1 (GLP-1) agonists, like semaglutide, liraglutide, and the newly US Food and Drug Administration–approved tirzepatide, not only are gaining popularity among the public for weight loss but also are the focus of considerable attention from gastroenterology researchers.

The robust interest in GLP-1 agonists was on full display here at the annual meeting of the American College of Gastroenterology, with investigators sharing results on which agent is most effective for weight loss, how they compare to bariatric surgery for weight loss or prevention of metabolic dysfunction–associated steatotic liver disease, and their potential role to prevent regain after weight-loss surgery.
 

Head-to-Head Comparison

Tirzepatide 15 mg emerged as superior to other GLP-1 agonists for weight loss, for example, in a network meta-analysis of randomized controlled trials looking into obesity management.

Tirzepatide 15 mg was associated with the most effective mean weight loss at just over 15% when Jena Velji-Ibrahim, MD, and colleagues combined data from 14 studies with 18,714 participants with overweight or obesity but without diabetes.

Next up in order of weight-loss efficacy was tirzepatide 10 mg with 13% mean weight loss, semaglutide 2.4 mg with just over 11% mean weight loss, and tirzepatide 5 mg with almost 10% mean weight loss. The only outlier was dulaglutide 0.75 mg, which was linked to about 8% weight gain.

“While clinical trials have been conducted to assess the weight-loss efficacy of GLP-1 agonists, there has been limited head-to-head comparisons, and the data that has been obtained has been quite inconsistent,” Dr. Velji-Ibrahim said when presenting results at the meeting.

Researchers found little difference in efficacies between tirzepatide 15 mg and 10 mg, suggesting both are a viable option for weight loss, said Dr. Velji-Ibrahim of Prisma Health Greenville Memorial Hospital and University of South Carolina School of Medicine in Greenville.

She also reported similar efficacies between oral semaglutide 50 mg and subcutaneous semaglutide 2.4 mg, “meaning that we have another option for weight management.”

Side effects among the different GLP-1 agonists, and among the same agent at different doses, were not significantly different.
 

Comparison With Bariatric Surgery for Reducing Major Adverse Cardiovascular Events (MACE)

For many years, bariatric surgeons have pointed to the health benefits of weight-loss surgery in the right candidates, including a reduced risk for adverse cardiovascular events.

The weight loss associated with GLP-1 agonists has likewise shown benefits in reducing MACE. However, it remains unclear if one of these weight-loss strategies is better than the other in reducing these outcomes.

To determine this, researchers compared 118,828 people who had bariatric surgery to another propensity-matched group of 118,828 others prescribed GLP-1 agonists. They included adults with a body mass index (BMI) of 35 or higher in the national TriNetX database.

The multicenter, retrospective study revealed bariatric surgery was superior in reducing the risk for heart failure, MACE, and cerebrovascular disease at 3, 5, 7, and 10 years. At 10 years, for example, bariatric surgery was associated with 31% fewer composite cardiovascular events than the GLP-1 agonists.

“Our results suggest that bariatric surgery is more effective than GLP-1 analogs in preventing adverse cardiovascular events in obese patients,” Ayowumi A. Adekolu, MD, an internal medicine resident at West Virginia School of Medicine in Morgantown, said in audio comments accompanying his ePoster at the meeting. “Although these findings highlight the benefit of bariatric surgery in mitigating adverse cardiovascular events, well-designed prospective studies are necessary to confirm these benefits in this patient population.”

Possible Role in Fatty Liver Disease Prevention
 

In another large multicenter study from the same institution, Ethan M. Cohen, MD, along with co-author Dr. Adekolu and others, compared the effectiveness of bariatric surgery to GLP-1 agonists for preventing nonalcoholic fatty liver disease (NAFLD). Since the study was conducted, the official name of NAFLD has changed to metabolic dysfunction–associated steatotic liver disease.

Dr. Cohen and colleagues evaluated data from the TriNetX database and included adults with a BMI of 35 or higher. They propensity matched 124,022 people who had sleeve gastrectomy or Roux-en-Y gastric bypass to another 124,022 others prescribed GLP-1 agonists. Again, they looked at outcomes at 3, 5, 7, and 10 years.

They found bariatric surgery superior to GLP-1 agonists for reducing the risk of developing NAFLD. Relative risk reduction was 25% at 3 years, 28% at 5 years, 27% at 7 years, and 26% at 10 years.

Although not to the same extent as surgery in this study, GLP-1–associated weight loss did reduce risks as well.

“An important aspect of this is that for some of these people, bariatric surgery is not even an option,” Dr. Cohen said in an interview, citing as an example those who do not meet the criteria for surgery.

Dr. Cohen and colleagues plan to continue the study with a larger number of participants.
 

Real-World Weight Regain

In another instance where a surgical procedure trumped GLP-1 agonists, revisional endoscopic sleeve gastroplasty (ESG) offered significantly higher weight loss than GLP-1 agonists among people who regained weight following initial weight-loss surgery, according to a case-control real-world study presented at the meeting.

“Laparoscopic sleeve gastrectomy [LSG] is a frequently performed bariatric surgery worldwide resulting in significant weight loss and improvement in obesity-related comorbidities,” said Firas Bahdi, MD, gastroenterology fellow at the David Geffen School of Medicine at University of California, Los Angeles. “Despite its success, around one third of patients, unfortunately, develop weight regain warranting intervention.”

Dr. Bahdi and colleagues retrospectively studied 68 adults prescribed subcutaneous semaglutide or tirzepatide after LSG, another 20 who had ESG for weight regain after LSG, and 87 controls with intact stomachs who also took GLP-1 agonists for weight loss.

They found that the ESG group experienced a significantly higher percentage of total body weight loss at 3 months than the GLP-1 group (10% vs 4.3%, respectively; P = .0001). Similarly, at the 6-month follow-up, the ESG group experienced 11.5% total body weight loss compared to 6.8% in the GLP-1 group (P = .03).

The GLP-1 after LSG group still fared better than the GLP-1 control group of people who never had surgery. Total body weight loss was 4.3% vs 5.7% at 3 months (P = .02), 6.8% vs 9.2% at 6 months (P = .02), and 9.2% vs 12.7% at 12 months (P = .03).

“In this real-world experience, revisional ESG offers significantly more weight loss than GLP-1 agonists for patients with weight regain, while also avoiding the challenges of medication refills, making it an attractive option,” Dr. Bahdi said.

Future multicenter studies are warranted to confirm these results and explore physiological explanations, he added.

The study received an Outstanding Research Award in the Obesity Category (Trainee).

Dr. Velji-Ibrahim, Dr. Adekolu, Dr. Cohen, and Dr. Bahdi indicated no relevant financial relationships.

A version of this article appeared on Medscape.com.

TOPLINE:

Pregnancy weight gain is lower in women with a history of gastric bypass or sleeve gastrectomy than in those without such a history, especially when the interval between surgery and conception is shorter, new data suggest.

METHODOLOGY:

• Using Swedish national registers, researchers investigated the association of pregnancy weight gain with  history in 12,776 pregnancies — 6388 in women with a history of bariatric surgery and 6388 in women without such a history.
• Pregnancies were propensity score matched to patients’ early-pregnancy body mass index (BMI), prepregnancy diabetes, , smoking status, education, height, country of birth, and delivery year.
• Post-gastric bypass pregnancies were matched to post-sleeve gastrectomy pregnancies using the same matching strategy.
• Time from surgery to conception was also assessed.

TAKEAWAY:

• Across all early-pregnancy BMI strata, women with a history of bariatric surgery had lower pregnancy weight gain than matched controls.
• The magnitude of difference was largest for women with normal weight or overweight early-pregnancy BMI status (adjusted mean difference in z score, −0.33), which then decreased stepwise within the  subclasses (−0.21, −0.16, and −0.08 for obesity classes I, II, and III, respectively).
• Pregnancy weight gain did not differ by surgery type, but lower pregnancy weight gain was associated with a shorter surgery-to-conception interval (particularly within 1 year) or lower surgery-to-conception weight loss.

IN PRACTICE:

“The highest proportion of weight gain below the recommendations was found among women with a normal weight status. Hence, clinical attention to women with history of bariatric surgery and a normal weight status in early pregnancy might be warranted,” the authors advised.

SOURCE:

The study, with the first author Huiling Xu, MD, MSc, Karolinska Institutet, Stockholm, Sweden, was published online in JAMA Network Open.

LIMITATIONS:

Despite rigorous matching, residual confounding was possible. The sample size was limited for some subgroups, possibly affecting statistical power. Although the study provides an overview of pregnancy outcomes within surgery-to-conception interval and pregnancy weight gain z scores, a more in-depth investigation is needed to understand the associations among bariatric surgery, pregnancy weight gain, and pregnancy outcomes.

DISCLOSURES:

Research for this study was supported by the Swedish Research Council for Health, Working Life and Welfare, and the Swedish Research Council. The authors have no relevant disclosures.

A version of this article appeared on Medscape.com.

TOPLINE:

Pregnancy weight gain is lower in women with a history of gastric bypass or sleeve gastrectomy than in those without such a history, especially when the interval between surgery and conception is shorter, new data suggest.

METHODOLOGY:

• Using Swedish national registers, researchers investigated the association of pregnancy weight gain with  history in 12,776 pregnancies — 6388 in women with a history of bariatric surgery and 6388 in women without such a history.
• Pregnancies were propensity score matched to patients’ early-pregnancy body mass index (BMI), prepregnancy diabetes, , smoking status, education, height, country of birth, and delivery year.
• Post-gastric bypass pregnancies were matched to post-sleeve gastrectomy pregnancies using the same matching strategy.
• Time from surgery to conception was also assessed.

TAKEAWAY:

• Across all early-pregnancy BMI strata, women with a history of bariatric surgery had lower pregnancy weight gain than matched controls.
• The magnitude of difference was largest for women with normal weight or overweight early-pregnancy BMI status (adjusted mean difference in z score, −0.33), which then decreased stepwise within the  subclasses (−0.21, −0.16, and −0.08 for obesity classes I, II, and III, respectively).
• Pregnancy weight gain did not differ by surgery type, but lower pregnancy weight gain was associated with a shorter surgery-to-conception interval (particularly within 1 year) or lower surgery-to-conception weight loss.

IN PRACTICE:

“The highest proportion of weight gain below the recommendations was found among women with a normal weight status. Hence, clinical attention to women with history of bariatric surgery and a normal weight status in early pregnancy might be warranted,” the authors advised.

SOURCE:

The study, with the first author Huiling Xu, MD, MSc, Karolinska Institutet, Stockholm, Sweden, was published online in JAMA Network Open.

LIMITATIONS:

Despite rigorous matching, residual confounding was possible. The sample size was limited for some subgroups, possibly affecting statistical power. Although the study provides an overview of pregnancy outcomes within surgery-to-conception interval and pregnancy weight gain z scores, a more in-depth investigation is needed to understand the associations among bariatric surgery, pregnancy weight gain, and pregnancy outcomes.

DISCLOSURES:

Research for this study was supported by the Swedish Research Council for Health, Working Life and Welfare, and the Swedish Research Council. The authors have no relevant disclosures.

A version of this article appeared on Medscape.com.

TOPLINE:

Pregnancy weight gain is lower in women with a history of gastric bypass or sleeve gastrectomy than in those without such a history, especially when the interval between surgery and conception is shorter, new data suggest.

METHODOLOGY:

• Using Swedish national registers, researchers investigated the association of pregnancy weight gain with  history in 12,776 pregnancies — 6388 in women with a history of bariatric surgery and 6388 in women without such a history.
• Pregnancies were propensity score matched to patients’ early-pregnancy body mass index (BMI), prepregnancy diabetes, , smoking status, education, height, country of birth, and delivery year.
• Post-gastric bypass pregnancies were matched to post-sleeve gastrectomy pregnancies using the same matching strategy.
• Time from surgery to conception was also assessed.

TAKEAWAY:

• Across all early-pregnancy BMI strata, women with a history of bariatric surgery had lower pregnancy weight gain than matched controls.
• The magnitude of difference was largest for women with normal weight or overweight early-pregnancy BMI status (adjusted mean difference in z score, −0.33), which then decreased stepwise within the  subclasses (−0.21, −0.16, and −0.08 for obesity classes I, II, and III, respectively).
• Pregnancy weight gain did not differ by surgery type, but lower pregnancy weight gain was associated with a shorter surgery-to-conception interval (particularly within 1 year) or lower surgery-to-conception weight loss.

IN PRACTICE:

“The highest proportion of weight gain below the recommendations was found among women with a normal weight status. Hence, clinical attention to women with history of bariatric surgery and a normal weight status in early pregnancy might be warranted,” the authors advised.

SOURCE:

The study, with the first author Huiling Xu, MD, MSc, Karolinska Institutet, Stockholm, Sweden, was published online in JAMA Network Open.

LIMITATIONS:

Despite rigorous matching, residual confounding was possible. The sample size was limited for some subgroups, possibly affecting statistical power. Although the study provides an overview of pregnancy outcomes within surgery-to-conception interval and pregnancy weight gain z scores, a more in-depth investigation is needed to understand the associations among bariatric surgery, pregnancy weight gain, and pregnancy outcomes.

DISCLOSURES:

Research for this study was supported by the Swedish Research Council for Health, Working Life and Welfare, and the Swedish Research Council. The authors have no relevant disclosures.

A version of this article appeared on Medscape.com.

Bariatric surgery continues to play a major role in obesity management despite the emergence of potent new weight-loss medications, according to two experts who spoke at an Endocrine Society science writers briefing.

“Bariatric surgery is safe, effective, and unfortunately underutilized for treating obesity and its complications,” said Jaime Almandoz, MD, medical director of the Weight Wellness Program at the University of Texas Southwestern Medical Center, Dallas.

Added Dr. Almandoz, who is triple board-certified in internal medicine, endocrinology, and obesity medicine, “Sometimes this gets presented in a linear fashion. ‘We’ll try lifestyle first, and if that doesn’t work, we’ll try medications, and if that doesn’t work, we’ll try surgery.’ But sometimes we might need to go straight to surgery instead of going through medications first, because it may be the most effective and evidence-based treatment for the person in the office in front of you.”

Moreover, he pointed out that currently, Medicare and many private insurers don’t cover antiobesity medications but do cover bariatric surgery.

Indeed, Srividya Kidambi, MD, professor and chief of endocrinology and molecular medicine at the Medical College of Wisconsin/Froedtert Hospital, Milwaukee, said there are certain types of patients for whom she might consider bariatric surgery first. One would be a person with a body mass index (BMI) greater than 40 kg/m² or with a BMI greater than 35 kg/m² and severe comorbidities.

Another, she said, would be young, relatively healthy people with obesity who have no comorbid conditions. “We know that if we stop the medication, the weight comes back. So, if I see a 20- to 25-year-old, am I really to commit them to lifelong therapy, or is bariatric surgery a better option in these cases? These drugs have not been around that long ... so I tend to recommend bariatric surgery in some patients.”

During the recent briefing, Dr. Almandoz summarized the evidence base for the benefits of bariatric surgery beyond weight loss, which include remission of type 2 diabetes and fatty liver disease, reduction of the risks of cardiovascular disease and cancer, and increased life expectancy.

“Everyone seems to be talking about GLP-1s for facilitating weight loss and treating obesity. ... What I want to do is provide a counterpoint to accessible therapies that are covered by more insurance plans and that may, in fact, have a better evidence base for treating obesity and its related complications,” he said in his introduction.

Bariatric surgery has been used for decades, and many centers of excellence perform it, with greatly reduced complication rates seen today than in the past. “It’s comparable to having a gallbladder surgery in terms of perioperative risk,” he noted.

Medicare and private insurers generally cover bariatric surgery for people with BMI greater than 40 kg/m2 or 35-39 kg/m² and at least one weight-related comorbidity, including type 2 diabetes, obstructive sleep apnea, hypertension, atherosclerotic disease, hyperlipidemia, and fatty liver disease.

Data suggest that weight reduction of about 3% can lead to meaningful reductions in blood glucose and triglyceride levels, but weight loss of 15% or greater is associated with reductions in cardiovascular events and type 2 diabetes remission. Lifestyle modification typically produces about 5% weight loss, compared with 20%-35% with bariatric surgery with sleeve gastrectomy or gastric bypass.

Older weight loss medications produced weight loss of 5%-10%; only the newer medications, semaglutide 2.4 mg and tirzepatide, come close to that. Weight loss with semaglutide is about 15%, while tirzepatide can produce weight loss of up to 22%. But, there are still issues with affordability, access, and lack of coverage, Dr. Almandoz noted.

One recent randomized trial of more than 400 individuals showed that bariatric surgery was more effective than lifestyle and medical therapies for treating metabolic-associated steatohepatitis without worsening of fibrosis.

Another showed that the surgery was associated with fewer major adverse liver outcomes among people who already had MASH. That same study showed a 70% reduction in cardiovascular events with bariatric surgery.

For patients with type 2 diabetes, numerous trials have demonstrated long-term remission and reduced A1c at 5 years and 10 years post surgery, along with reductions in microvascular and macrovascular complications.

Other data suggest that a shorter history of type 2 diabetes is among the factors predicting remission with bariatric surgery. “Oftentimes, both patients and providers will wait until the diabetes is quite advanced before they even have the conversation about weight loss or even bariatric surgery. This suggests that if we intervene earlier in the course of disease, when it is less severe and less advanced, we have a higher rate of causing remission in the diabetes,” Dr. Almandoz said.

The American Diabetes Association’s Standards of Care incorporate bariatric surgery as either “recommended” or “may be considered” to treat type 2 diabetes, depending on BMI level, for those who don’t achieve durable weight loss with nonsurgical methods, he noted.

A retrospective cohort study showed significant reductions in cardiovascular outcomes with bariatric surgery among people with baseline cardiovascular disease. “This is not just about bariatric surgery to cause weight loss. This is about the multitude of effects that happen when we treat obesity as a disease with highly effective therapies such as surgery,” he said.

Even cancer risk and cancer-related mortality were significantly reduced with bariatric surgery, another study found.

And in the long-term Swedish Obese Subjects Study, among people with obesity, bariatric surgery was associated with a 3-year increase in life expectancy, compared with not undergoing surgery.

However, Dr. Almandoz also pointed out that some patients may benefit from both weight-loss medication and bariatric surgery. “Once someone has undergone pharmacotherapy, there may still be a role for bariatric procedures in helping to optimize body weight and control body weight long term. And likewise for those who have undergone bariatric surgery, there’s also a role for pharmacotherapy in terms of treating insufficient weight loss or weight recurrence after bariatric surgery. ... So I think there’s clearly a role for integration of therapies.”

Dr. Almandoz serves as consultant/advisory board member for Novo Nordisk, Boehringer Ingelheim, and Eli Lilly. Dr. Kidambi is director of TOPS Center for Metabolic Research and is medical editor of TOPS Magazine, for which her institution receives an honorarium.

A version of this article first appeared on Medscape.com.

Bariatric surgery continues to play a major role in obesity management despite the emergence of potent new weight-loss medications, according to two experts who spoke at an Endocrine Society science writers briefing.

“Bariatric surgery is safe, effective, and unfortunately underutilized for treating obesity and its complications,” said Jaime Almandoz, MD, medical director of the Weight Wellness Program at the University of Texas Southwestern Medical Center, Dallas.

Added Dr. Almandoz, who is triple board-certified in internal medicine, endocrinology, and obesity medicine, “Sometimes this gets presented in a linear fashion. ‘We’ll try lifestyle first, and if that doesn’t work, we’ll try medications, and if that doesn’t work, we’ll try surgery.’ But sometimes we might need to go straight to surgery instead of going through medications first, because it may be the most effective and evidence-based treatment for the person in the office in front of you.”

Moreover, he pointed out that currently, Medicare and many private insurers don’t cover antiobesity medications but do cover bariatric surgery.

Indeed, Srividya Kidambi, MD, professor and chief of endocrinology and molecular medicine at the Medical College of Wisconsin/Froedtert Hospital, Milwaukee, said there are certain types of patients for whom she might consider bariatric surgery first. One would be a person with a body mass index (BMI) greater than 40 kg/m² or with a BMI greater than 35 kg/m² and severe comorbidities.

Another, she said, would be young, relatively healthy people with obesity who have no comorbid conditions. “We know that if we stop the medication, the weight comes back. So, if I see a 20- to 25-year-old, am I really to commit them to lifelong therapy, or is bariatric surgery a better option in these cases? These drugs have not been around that long ... so I tend to recommend bariatric surgery in some patients.”

During the recent briefing, Dr. Almandoz summarized the evidence base for the benefits of bariatric surgery beyond weight loss, which include remission of type 2 diabetes and fatty liver disease, reduction of the risks of cardiovascular disease and cancer, and increased life expectancy.

“Everyone seems to be talking about GLP-1s for facilitating weight loss and treating obesity. ... What I want to do is provide a counterpoint to accessible therapies that are covered by more insurance plans and that may, in fact, have a better evidence base for treating obesity and its related complications,” he said in his introduction.

Bariatric surgery has been used for decades, and many centers of excellence perform it, with greatly reduced complication rates seen today than in the past. “It’s comparable to having a gallbladder surgery in terms of perioperative risk,” he noted.

Medicare and private insurers generally cover bariatric surgery for people with BMI greater than 40 kg/m2 or 35-39 kg/m² and at least one weight-related comorbidity, including type 2 diabetes, obstructive sleep apnea, hypertension, atherosclerotic disease, hyperlipidemia, and fatty liver disease.

Data suggest that weight reduction of about 3% can lead to meaningful reductions in blood glucose and triglyceride levels, but weight loss of 15% or greater is associated with reductions in cardiovascular events and type 2 diabetes remission. Lifestyle modification typically produces about 5% weight loss, compared with 20%-35% with bariatric surgery with sleeve gastrectomy or gastric bypass.

Older weight loss medications produced weight loss of 5%-10%; only the newer medications, semaglutide 2.4 mg and tirzepatide, come close to that. Weight loss with semaglutide is about 15%, while tirzepatide can produce weight loss of up to 22%. But, there are still issues with affordability, access, and lack of coverage, Dr. Almandoz noted.

One recent randomized trial of more than 400 individuals showed that bariatric surgery was more effective than lifestyle and medical therapies for treating metabolic-associated steatohepatitis without worsening of fibrosis.

Another showed that the surgery was associated with fewer major adverse liver outcomes among people who already had MASH. That same study showed a 70% reduction in cardiovascular events with bariatric surgery.

For patients with type 2 diabetes, numerous trials have demonstrated long-term remission and reduced A1c at 5 years and 10 years post surgery, along with reductions in microvascular and macrovascular complications.

Other data suggest that a shorter history of type 2 diabetes is among the factors predicting remission with bariatric surgery. “Oftentimes, both patients and providers will wait until the diabetes is quite advanced before they even have the conversation about weight loss or even bariatric surgery. This suggests that if we intervene earlier in the course of disease, when it is less severe and less advanced, we have a higher rate of causing remission in the diabetes,” Dr. Almandoz said.

The American Diabetes Association’s Standards of Care incorporate bariatric surgery as either “recommended” or “may be considered” to treat type 2 diabetes, depending on BMI level, for those who don’t achieve durable weight loss with nonsurgical methods, he noted.

A retrospective cohort study showed significant reductions in cardiovascular outcomes with bariatric surgery among people with baseline cardiovascular disease. “This is not just about bariatric surgery to cause weight loss. This is about the multitude of effects that happen when we treat obesity as a disease with highly effective therapies such as surgery,” he said.

Even cancer risk and cancer-related mortality were significantly reduced with bariatric surgery, another study found.

And in the long-term Swedish Obese Subjects Study, among people with obesity, bariatric surgery was associated with a 3-year increase in life expectancy, compared with not undergoing surgery.

However, Dr. Almandoz also pointed out that some patients may benefit from both weight-loss medication and bariatric surgery. “Once someone has undergone pharmacotherapy, there may still be a role for bariatric procedures in helping to optimize body weight and control body weight long term. And likewise for those who have undergone bariatric surgery, there’s also a role for pharmacotherapy in terms of treating insufficient weight loss or weight recurrence after bariatric surgery. ... So I think there’s clearly a role for integration of therapies.”

Dr. Almandoz serves as consultant/advisory board member for Novo Nordisk, Boehringer Ingelheim, and Eli Lilly. Dr. Kidambi is director of TOPS Center for Metabolic Research and is medical editor of TOPS Magazine, for which her institution receives an honorarium.

A version of this article first appeared on Medscape.com.

Bariatric surgery continues to play a major role in obesity management despite the emergence of potent new weight-loss medications, according to two experts who spoke at an Endocrine Society science writers briefing.

“Bariatric surgery is safe, effective, and unfortunately underutilized for treating obesity and its complications,” said Jaime Almandoz, MD, medical director of the Weight Wellness Program at the University of Texas Southwestern Medical Center, Dallas.

Added Dr. Almandoz, who is triple board-certified in internal medicine, endocrinology, and obesity medicine, “Sometimes this gets presented in a linear fashion. ‘We’ll try lifestyle first, and if that doesn’t work, we’ll try medications, and if that doesn’t work, we’ll try surgery.’ But sometimes we might need to go straight to surgery instead of going through medications first, because it may be the most effective and evidence-based treatment for the person in the office in front of you.”

Moreover, he pointed out that currently, Medicare and many private insurers don’t cover antiobesity medications but do cover bariatric surgery.

Indeed, Srividya Kidambi, MD, professor and chief of endocrinology and molecular medicine at the Medical College of Wisconsin/Froedtert Hospital, Milwaukee, said there are certain types of patients for whom she might consider bariatric surgery first. One would be a person with a body mass index (BMI) greater than 40 kg/m² or with a BMI greater than 35 kg/m² and severe comorbidities.

Another, she said, would be young, relatively healthy people with obesity who have no comorbid conditions. “We know that if we stop the medication, the weight comes back. So, if I see a 20- to 25-year-old, am I really to commit them to lifelong therapy, or is bariatric surgery a better option in these cases? These drugs have not been around that long ... so I tend to recommend bariatric surgery in some patients.”

During the recent briefing, Dr. Almandoz summarized the evidence base for the benefits of bariatric surgery beyond weight loss, which include remission of type 2 diabetes and fatty liver disease, reduction of the risks of cardiovascular disease and cancer, and increased life expectancy.

“Everyone seems to be talking about GLP-1s for facilitating weight loss and treating obesity. ... What I want to do is provide a counterpoint to accessible therapies that are covered by more insurance plans and that may, in fact, have a better evidence base for treating obesity and its related complications,” he said in his introduction.

Bariatric surgery has been used for decades, and many centers of excellence perform it, with greatly reduced complication rates seen today than in the past. “It’s comparable to having a gallbladder surgery in terms of perioperative risk,” he noted.

Medicare and private insurers generally cover bariatric surgery for people with BMI greater than 40 kg/m2 or 35-39 kg/m² and at least one weight-related comorbidity, including type 2 diabetes, obstructive sleep apnea, hypertension, atherosclerotic disease, hyperlipidemia, and fatty liver disease.

Data suggest that weight reduction of about 3% can lead to meaningful reductions in blood glucose and triglyceride levels, but weight loss of 15% or greater is associated with reductions in cardiovascular events and type 2 diabetes remission. Lifestyle modification typically produces about 5% weight loss, compared with 20%-35% with bariatric surgery with sleeve gastrectomy or gastric bypass.

Older weight loss medications produced weight loss of 5%-10%; only the newer medications, semaglutide 2.4 mg and tirzepatide, come close to that. Weight loss with semaglutide is about 15%, while tirzepatide can produce weight loss of up to 22%. But, there are still issues with affordability, access, and lack of coverage, Dr. Almandoz noted.

One recent randomized trial of more than 400 individuals showed that bariatric surgery was more effective than lifestyle and medical therapies for treating metabolic-associated steatohepatitis without worsening of fibrosis.

Another showed that the surgery was associated with fewer major adverse liver outcomes among people who already had MASH. That same study showed a 70% reduction in cardiovascular events with bariatric surgery.

For patients with type 2 diabetes, numerous trials have demonstrated long-term remission and reduced A1c at 5 years and 10 years post surgery, along with reductions in microvascular and macrovascular complications.

Other data suggest that a shorter history of type 2 diabetes is among the factors predicting remission with bariatric surgery. “Oftentimes, both patients and providers will wait until the diabetes is quite advanced before they even have the conversation about weight loss or even bariatric surgery. This suggests that if we intervene earlier in the course of disease, when it is less severe and less advanced, we have a higher rate of causing remission in the diabetes,” Dr. Almandoz said.

The American Diabetes Association’s Standards of Care incorporate bariatric surgery as either “recommended” or “may be considered” to treat type 2 diabetes, depending on BMI level, for those who don’t achieve durable weight loss with nonsurgical methods, he noted.

A retrospective cohort study showed significant reductions in cardiovascular outcomes with bariatric surgery among people with baseline cardiovascular disease. “This is not just about bariatric surgery to cause weight loss. This is about the multitude of effects that happen when we treat obesity as a disease with highly effective therapies such as surgery,” he said.

Even cancer risk and cancer-related mortality were significantly reduced with bariatric surgery, another study found.

And in the long-term Swedish Obese Subjects Study, among people with obesity, bariatric surgery was associated with a 3-year increase in life expectancy, compared with not undergoing surgery.

However, Dr. Almandoz also pointed out that some patients may benefit from both weight-loss medication and bariatric surgery. “Once someone has undergone pharmacotherapy, there may still be a role for bariatric procedures in helping to optimize body weight and control body weight long term. And likewise for those who have undergone bariatric surgery, there’s also a role for pharmacotherapy in terms of treating insufficient weight loss or weight recurrence after bariatric surgery. ... So I think there’s clearly a role for integration of therapies.”

Dr. Almandoz serves as consultant/advisory board member for Novo Nordisk, Boehringer Ingelheim, and Eli Lilly. Dr. Kidambi is director of TOPS Center for Metabolic Research and is medical editor of TOPS Magazine, for which her institution receives an honorarium.

A version of this article first appeared on Medscape.com.

TOPLINE:

Endoscopic sleeve gastroplasty (ESG) is safe and effective for weight loss in adults with class I, II, or III obesity, according to real-world data from a large U.S. study.

METHODOLOGY:

• Researchers conducted a retrospective analysis of 1,506 adults (85% female, 70% White) with severe obesity (501 class I, 546 class II, and 459 class III) who underwent ESG at seven academic and private U.S. centers from 2013 to 2022.
• Average percent total body weight loss (%TBWL) was evaluated at 6, 12, 18, and 24 months after the procedure.
• Weight loss and safety outcomes were evaluated according to obesity class.

TAKEAWAY:

• At 12 months, 83.2% of patients achieved ≥10% TBWL and 60.9% achieved ≥15% TBWL across all obesity classes.
• There was a significant difference in TBWL by baseline obesity class, with average weight loss significantly greater in class III than classes I and II at all time points. At 24 months, class III patients had mean TBWL of 20.4%, compared with 13.3% for class I and 13.6% for class II patients.
• As early as 6 months post-ESG, patients in all BMI classes were able to drop to the next lower BMI class and remained there through 2 years. However, ongoing improvement in BMI until the end of follow-up was seen only in class III patients. Notably, class III patients were significantly younger and taller than class I and class II patients.
• There were no differences in adverse events between obesity classes. Only 2.6% of patients had an adverse event requiring hospitalization. Most of these events (86%) were for symptom management and/or fluid replacement.

IN PRACTICE:

“Traditionally, ESG has been proposed as a treatment choice for patients with class I and II obesity because of its modest weight loss outcomes. However, our data show a %TBWL crossing 20% in patients with class III disease, which may push the envelope of perceived utility of ESG,” the authors write.

SOURCE:

The study, with first author Khushboo Gala, MBBS, division of gastroenterology and hepatology, Mayo Clinic, Rochester, Minn., was published online in Clinical and Translational Gastroenterology.

LIMITATIONS:

Limitations include the retrospective design, with outcomes only out to 2 years, and loss of follow-up, with only 339 of the 1506 patients evaluated at 2 years.

DISCLOSURES:

The study had no financial support. Several study authors reported ties to industry. The full list can be found with the original article.

A version of this article first appeared on Medscape.com.

TOPLINE:

Endoscopic sleeve gastroplasty (ESG) is safe and effective for weight loss in adults with class I, II, or III obesity, according to real-world data from a large U.S. study.

METHODOLOGY:

• Researchers conducted a retrospective analysis of 1,506 adults (85% female, 70% White) with severe obesity (501 class I, 546 class II, and 459 class III) who underwent ESG at seven academic and private U.S. centers from 2013 to 2022.
• Average percent total body weight loss (%TBWL) was evaluated at 6, 12, 18, and 24 months after the procedure.
• Weight loss and safety outcomes were evaluated according to obesity class.

TAKEAWAY:

• At 12 months, 83.2% of patients achieved ≥10% TBWL and 60.9% achieved ≥15% TBWL across all obesity classes.
• There was a significant difference in TBWL by baseline obesity class, with average weight loss significantly greater in class III than classes I and II at all time points. At 24 months, class III patients had mean TBWL of 20.4%, compared with 13.3% for class I and 13.6% for class II patients.
• As early as 6 months post-ESG, patients in all BMI classes were able to drop to the next lower BMI class and remained there through 2 years. However, ongoing improvement in BMI until the end of follow-up was seen only in class III patients. Notably, class III patients were significantly younger and taller than class I and class II patients.
• There were no differences in adverse events between obesity classes. Only 2.6% of patients had an adverse event requiring hospitalization. Most of these events (86%) were for symptom management and/or fluid replacement.

IN PRACTICE:

“Traditionally, ESG has been proposed as a treatment choice for patients with class I and II obesity because of its modest weight loss outcomes. However, our data show a %TBWL crossing 20% in patients with class III disease, which may push the envelope of perceived utility of ESG,” the authors write.

SOURCE:

The study, with first author Khushboo Gala, MBBS, division of gastroenterology and hepatology, Mayo Clinic, Rochester, Minn., was published online in Clinical and Translational Gastroenterology.

LIMITATIONS:

Limitations include the retrospective design, with outcomes only out to 2 years, and loss of follow-up, with only 339 of the 1506 patients evaluated at 2 years.

DISCLOSURES:

The study had no financial support. Several study authors reported ties to industry. The full list can be found with the original article.

A version of this article first appeared on Medscape.com.

TOPLINE:

Endoscopic sleeve gastroplasty (ESG) is safe and effective for weight loss in adults with class I, II, or III obesity, according to real-world data from a large U.S. study.

METHODOLOGY:

• Researchers conducted a retrospective analysis of 1,506 adults (85% female, 70% White) with severe obesity (501 class I, 546 class II, and 459 class III) who underwent ESG at seven academic and private U.S. centers from 2013 to 2022.
• Average percent total body weight loss (%TBWL) was evaluated at 6, 12, 18, and 24 months after the procedure.
• Weight loss and safety outcomes were evaluated according to obesity class.

TAKEAWAY:

• At 12 months, 83.2% of patients achieved ≥10% TBWL and 60.9% achieved ≥15% TBWL across all obesity classes.
• There was a significant difference in TBWL by baseline obesity class, with average weight loss significantly greater in class III than classes I and II at all time points. At 24 months, class III patients had mean TBWL of 20.4%, compared with 13.3% for class I and 13.6% for class II patients.
• As early as 6 months post-ESG, patients in all BMI classes were able to drop to the next lower BMI class and remained there through 2 years. However, ongoing improvement in BMI until the end of follow-up was seen only in class III patients. Notably, class III patients were significantly younger and taller than class I and class II patients.
• There were no differences in adverse events between obesity classes. Only 2.6% of patients had an adverse event requiring hospitalization. Most of these events (86%) were for symptom management and/or fluid replacement.

IN PRACTICE:

“Traditionally, ESG has been proposed as a treatment choice for patients with class I and II obesity because of its modest weight loss outcomes. However, our data show a %TBWL crossing 20% in patients with class III disease, which may push the envelope of perceived utility of ESG,” the authors write.

SOURCE:

The study, with first author Khushboo Gala, MBBS, division of gastroenterology and hepatology, Mayo Clinic, Rochester, Minn., was published online in Clinical and Translational Gastroenterology.

LIMITATIONS:

Limitations include the retrospective design, with outcomes only out to 2 years, and loss of follow-up, with only 339 of the 1506 patients evaluated at 2 years.

DISCLOSURES:

The study had no financial support. Several study authors reported ties to industry. The full list can be found with the original article.

A version of this article first appeared on Medscape.com.

SAN DIEGO – Bariatric surgery produced sustained, long-term glucose control and weight loss for at least 7 years, and for up to 12 years, in some U.S. patients with type 2 diabetes and a baseline body mass index (BMI) of at least 27 kg/m², according to new study results.

The findings are from ARMMS-T2D, a prospective, controlled trial with the largest cohort and longest follow-up of bariatric surgery reported to date. The results reinforce the potential role of surgery “as an option to improve diabetes-related outcomes, including people with a BMI of less than 35 kg/m²,” said Anita P. Courcoulas, MD, at the recent annual scientific sessions of the American Diabetes Association.

People who underwent bariatric surgery (gastric band, sleeve gastrectomy, or Roux-en-Y gastric bypass) had an average 1.6–percentage point drop in hemoglobin A1c from baseline 7 years after surgery and an average 1.4–percentage point reduction from baseline after 12 years. Average decreases from baseline were 0.2 and 0.3 percentage points at these time points, respectively, among controls who underwent lifestyle and medical interventions only. Between-group differences were significant at both the 7-year (primary endpoint) and 12-year time points in the intention-to-treat analysis, reported Dr. Courcoulas, a professor of surgery at the University of Pittsburgh.

Average weight loss from baseline to 7 and 12 years was 19.9% and 19.3%, respectively, in the surgery group and 8.3% and 10.8%, respectively, among controls, which was significantly different between groups at both time points (a secondary endpoint).

Dr. Courcoulas highlighted that the 10.8% average weight loss after 12 years among controls included crossovers, with 25% of patients progressing from their initial intervention of lifestyle and medical management to undergoing bariatric surgery during follow-up. Among the controls who never underwent surgery (per-protocol analysis), the 12-year average weight loss from baseline was 7.3%.
 

High-dose incretin-hormone therapy missing

A major limitation of ARMMS-T2D (Alliance of Randomized Trials of Medicine vs. Metabolic Surgery in Type 2 Diabetes) is that it prospectively followed a combined cohort from four independently run controlled U.S. trials that all began more than a decade ago, before the contemporary era of medical weight loss management that’s been revolutionized by incretin-hormone receptor agonists such as semaglutide (Ozempic/Wegovy, Novo Nordisk) and tirzepatide (Mounjaro, Lilly).

New randomized, controlled trials “are needed” that compare metabolic bariatric surgery with medical and lifestyle management that includes “high-dose incretin-hormone therapy,” commented Robert H. Eckel, MD, designated discussant for ARMMS-T2D at the session.

The results also showed notable rates of two adverse events associated with bariatric surgery: a 14% incidence of bone fractures, compared with a rate of 5% among controls, and a 12% incidence of anemia after surgery, compared with a rate of 3% among controls.

The control group also had a significantly higher 3% incidence of new need for hemodialysis, compared with no incident dialysis cases among the surgery patients.

“The fracture difference [after bariatric surgery] needs more careful follow-up,” commented Dr. Eckel, an endocrinologist and emeritus professor at the University of Colorado at Denver, Aurora.

ARMMS-T2D included data from 262 people with overweight or obesity and type 2 diabetes randomized in any of four U.S. studies that compared the outcomes of 166 patients who underwent bariatric surgery with 96 patients who served as controls and had lifestyle and medical interventions for weight loss and glycemic control. Seven-year follow-up included 82 (85%) of the initial 96 control patients and 136 (82%) of the initial 166 surgery patients. After 12 years, 31 of the controls (32%) and 83 surgery patients (50%) remained for the A1c analysis.
 

A quartet of studies joined together

The ARMMS-T2D prospective analysis resulted from an early partnership by the organizers of the four independent randomized studies that compared bariatric surgery with lifestyle and medical intervention in people with type 2 diabetes and overweight or obesity: STAMPEDE, which included 150 people at the Cleveland Clinic starting in 2007; SLIMM-T2D, which included 88 people at Brigham and Women’s Hospital and the Joslin Diabetes Center in Boston starting in 2010; TRIABETES, which included 69 people at the University of Pittsburgh starting in 2009; and CROSSROADS, which included 43 people at the University of Washington, Seattle, starting in 2011.

Further secondary findings from the ARMMS-T2D analyses showed that 38% of the surgery patients and 17% of controls had an A1c < 6.5% after 7 years.

At 7 years, type 2 diabetes remission, defined as those with an A1c < 6.5% who were not taking any antidiabetes medications, was reached in 18% of surgery patients and 6% of controls. At 12 years, 13% of the surgery patients and none of the controls met this metric, Dr. Courcoulas said.

The duration of diabetes a person had before undergoing bariatric surgery “may be an important factor” as to whether patients undergo remission, suggested Dr. Eckel. He noted that longer duration type 2 diabetes usually results in increased glucose intolerance and makes remission less likely

Roux-en-Y gastric bypass appeared to have the best rates of patients achieving both lower A1c levels and more weight loss, followed by sleeve gastrectomy and gastric banding, which had the worst performance. But Dr. Courcoulas cautioned that the study was underpowered to reliably compare individual surgical procedures.

In terms of those with an A1c < 7.0%, surgery patients maintained a steady prevalence rate of about 55% during the first 5 years of follow-up, roughly twice the rate of controls, at 28% during all years of follow-up starting at year 5.

About 37% of enrolled patients had a BMI < 35 kg/m², and the A1c-lowering benefit and weight loss in this subgroup were consistent with the overall findings, which supports consideration of bariatric surgery for people with type 2 diabetes and a BMI < 35 kg/m², Dr. Courcoulas said.

She also highlighted that bariatric surgery was linked with significant reductions in triglyceride levels and increased high-density lipoprotein cholesterol levels, compared with controls. However, 22% of surgery patients experienced abdominal pain, compared with 10% of controls, and 7% experienced dysphagia, compared with no cases among the controls.

ARMMS-T2D received no commercial funding. Dr. Courcoulas had no disclosures. Dr. Eckel has been a consultant to numerous companies but said he had no relevant disclosures.

A version of this article first appeared on Medscape.com.

SAN DIEGO – Bariatric surgery produced sustained, long-term glucose control and weight loss for at least 7 years, and for up to 12 years, in some U.S. patients with type 2 diabetes and a baseline body mass index (BMI) of at least 27 kg/m², according to new study results.

The findings are from ARMMS-T2D, a prospective, controlled trial with the largest cohort and longest follow-up of bariatric surgery reported to date. The results reinforce the potential role of surgery “as an option to improve diabetes-related outcomes, including people with a BMI of less than 35 kg/m²,” said Anita P. Courcoulas, MD, at the recent annual scientific sessions of the American Diabetes Association.

People who underwent bariatric surgery (gastric band, sleeve gastrectomy, or Roux-en-Y gastric bypass) had an average 1.6–percentage point drop in hemoglobin A1c from baseline 7 years after surgery and an average 1.4–percentage point reduction from baseline after 12 years. Average decreases from baseline were 0.2 and 0.3 percentage points at these time points, respectively, among controls who underwent lifestyle and medical interventions only. Between-group differences were significant at both the 7-year (primary endpoint) and 12-year time points in the intention-to-treat analysis, reported Dr. Courcoulas, a professor of surgery at the University of Pittsburgh.

Average weight loss from baseline to 7 and 12 years was 19.9% and 19.3%, respectively, in the surgery group and 8.3% and 10.8%, respectively, among controls, which was significantly different between groups at both time points (a secondary endpoint).

Dr. Courcoulas highlighted that the 10.8% average weight loss after 12 years among controls included crossovers, with 25% of patients progressing from their initial intervention of lifestyle and medical management to undergoing bariatric surgery during follow-up. Among the controls who never underwent surgery (per-protocol analysis), the 12-year average weight loss from baseline was 7.3%.
 

High-dose incretin-hormone therapy missing

A major limitation of ARMMS-T2D (Alliance of Randomized Trials of Medicine vs. Metabolic Surgery in Type 2 Diabetes) is that it prospectively followed a combined cohort from four independently run controlled U.S. trials that all began more than a decade ago, before the contemporary era of medical weight loss management that’s been revolutionized by incretin-hormone receptor agonists such as semaglutide (Ozempic/Wegovy, Novo Nordisk) and tirzepatide (Mounjaro, Lilly).

New randomized, controlled trials “are needed” that compare metabolic bariatric surgery with medical and lifestyle management that includes “high-dose incretin-hormone therapy,” commented Robert H. Eckel, MD, designated discussant for ARMMS-T2D at the session.

The results also showed notable rates of two adverse events associated with bariatric surgery: a 14% incidence of bone fractures, compared with a rate of 5% among controls, and a 12% incidence of anemia after surgery, compared with a rate of 3% among controls.

The control group also had a significantly higher 3% incidence of new need for hemodialysis, compared with no incident dialysis cases among the surgery patients.

“The fracture difference [after bariatric surgery] needs more careful follow-up,” commented Dr. Eckel, an endocrinologist and emeritus professor at the University of Colorado at Denver, Aurora.

ARMMS-T2D included data from 262 people with overweight or obesity and type 2 diabetes randomized in any of four U.S. studies that compared the outcomes of 166 patients who underwent bariatric surgery with 96 patients who served as controls and had lifestyle and medical interventions for weight loss and glycemic control. Seven-year follow-up included 82 (85%) of the initial 96 control patients and 136 (82%) of the initial 166 surgery patients. After 12 years, 31 of the controls (32%) and 83 surgery patients (50%) remained for the A1c analysis.
 

A quartet of studies joined together

The ARMMS-T2D prospective analysis resulted from an early partnership by the organizers of the four independent randomized studies that compared bariatric surgery with lifestyle and medical intervention in people with type 2 diabetes and overweight or obesity: STAMPEDE, which included 150 people at the Cleveland Clinic starting in 2007; SLIMM-T2D, which included 88 people at Brigham and Women’s Hospital and the Joslin Diabetes Center in Boston starting in 2010; TRIABETES, which included 69 people at the University of Pittsburgh starting in 2009; and CROSSROADS, which included 43 people at the University of Washington, Seattle, starting in 2011.

Further secondary findings from the ARMMS-T2D analyses showed that 38% of the surgery patients and 17% of controls had an A1c < 6.5% after 7 years.

At 7 years, type 2 diabetes remission, defined as those with an A1c < 6.5% who were not taking any antidiabetes medications, was reached in 18% of surgery patients and 6% of controls. At 12 years, 13% of the surgery patients and none of the controls met this metric, Dr. Courcoulas said.

The duration of diabetes a person had before undergoing bariatric surgery “may be an important factor” as to whether patients undergo remission, suggested Dr. Eckel. He noted that longer duration type 2 diabetes usually results in increased glucose intolerance and makes remission less likely

Roux-en-Y gastric bypass appeared to have the best rates of patients achieving both lower A1c levels and more weight loss, followed by sleeve gastrectomy and gastric banding, which had the worst performance. But Dr. Courcoulas cautioned that the study was underpowered to reliably compare individual surgical procedures.

In terms of those with an A1c < 7.0%, surgery patients maintained a steady prevalence rate of about 55% during the first 5 years of follow-up, roughly twice the rate of controls, at 28% during all years of follow-up starting at year 5.

About 37% of enrolled patients had a BMI < 35 kg/m², and the A1c-lowering benefit and weight loss in this subgroup were consistent with the overall findings, which supports consideration of bariatric surgery for people with type 2 diabetes and a BMI < 35 kg/m², Dr. Courcoulas said.

She also highlighted that bariatric surgery was linked with significant reductions in triglyceride levels and increased high-density lipoprotein cholesterol levels, compared with controls. However, 22% of surgery patients experienced abdominal pain, compared with 10% of controls, and 7% experienced dysphagia, compared with no cases among the controls.

ARMMS-T2D received no commercial funding. Dr. Courcoulas had no disclosures. Dr. Eckel has been a consultant to numerous companies but said he had no relevant disclosures.

A version of this article first appeared on Medscape.com.

SAN DIEGO – Bariatric surgery produced sustained, long-term glucose control and weight loss for at least 7 years, and for up to 12 years, in some U.S. patients with type 2 diabetes and a baseline body mass index (BMI) of at least 27 kg/m², according to new study results.

The findings are from ARMMS-T2D, a prospective, controlled trial with the largest cohort and longest follow-up of bariatric surgery reported to date. The results reinforce the potential role of surgery “as an option to improve diabetes-related outcomes, including people with a BMI of less than 35 kg/m²,” said Anita P. Courcoulas, MD, at the recent annual scientific sessions of the American Diabetes Association.

People who underwent bariatric surgery (gastric band, sleeve gastrectomy, or Roux-en-Y gastric bypass) had an average 1.6–percentage point drop in hemoglobin A1c from baseline 7 years after surgery and an average 1.4–percentage point reduction from baseline after 12 years. Average decreases from baseline were 0.2 and 0.3 percentage points at these time points, respectively, among controls who underwent lifestyle and medical interventions only. Between-group differences were significant at both the 7-year (primary endpoint) and 12-year time points in the intention-to-treat analysis, reported Dr. Courcoulas, a professor of surgery at the University of Pittsburgh.

Average weight loss from baseline to 7 and 12 years was 19.9% and 19.3%, respectively, in the surgery group and 8.3% and 10.8%, respectively, among controls, which was significantly different between groups at both time points (a secondary endpoint).

Dr. Courcoulas highlighted that the 10.8% average weight loss after 12 years among controls included crossovers, with 25% of patients progressing from their initial intervention of lifestyle and medical management to undergoing bariatric surgery during follow-up. Among the controls who never underwent surgery (per-protocol analysis), the 12-year average weight loss from baseline was 7.3%.
 

High-dose incretin-hormone therapy missing

A major limitation of ARMMS-T2D (Alliance of Randomized Trials of Medicine vs. Metabolic Surgery in Type 2 Diabetes) is that it prospectively followed a combined cohort from four independently run controlled U.S. trials that all began more than a decade ago, before the contemporary era of medical weight loss management that’s been revolutionized by incretin-hormone receptor agonists such as semaglutide (Ozempic/Wegovy, Novo Nordisk) and tirzepatide (Mounjaro, Lilly).

New randomized, controlled trials “are needed” that compare metabolic bariatric surgery with medical and lifestyle management that includes “high-dose incretin-hormone therapy,” commented Robert H. Eckel, MD, designated discussant for ARMMS-T2D at the session.

The results also showed notable rates of two adverse events associated with bariatric surgery: a 14% incidence of bone fractures, compared with a rate of 5% among controls, and a 12% incidence of anemia after surgery, compared with a rate of 3% among controls.

The control group also had a significantly higher 3% incidence of new need for hemodialysis, compared with no incident dialysis cases among the surgery patients.

“The fracture difference [after bariatric surgery] needs more careful follow-up,” commented Dr. Eckel, an endocrinologist and emeritus professor at the University of Colorado at Denver, Aurora.

ARMMS-T2D included data from 262 people with overweight or obesity and type 2 diabetes randomized in any of four U.S. studies that compared the outcomes of 166 patients who underwent bariatric surgery with 96 patients who served as controls and had lifestyle and medical interventions for weight loss and glycemic control. Seven-year follow-up included 82 (85%) of the initial 96 control patients and 136 (82%) of the initial 166 surgery patients. After 12 years, 31 of the controls (32%) and 83 surgery patients (50%) remained for the A1c analysis.
 

A quartet of studies joined together

The ARMMS-T2D prospective analysis resulted from an early partnership by the organizers of the four independent randomized studies that compared bariatric surgery with lifestyle and medical intervention in people with type 2 diabetes and overweight or obesity: STAMPEDE, which included 150 people at the Cleveland Clinic starting in 2007; SLIMM-T2D, which included 88 people at Brigham and Women’s Hospital and the Joslin Diabetes Center in Boston starting in 2010; TRIABETES, which included 69 people at the University of Pittsburgh starting in 2009; and CROSSROADS, which included 43 people at the University of Washington, Seattle, starting in 2011.

Further secondary findings from the ARMMS-T2D analyses showed that 38% of the surgery patients and 17% of controls had an A1c < 6.5% after 7 years.

At 7 years, type 2 diabetes remission, defined as those with an A1c < 6.5% who were not taking any antidiabetes medications, was reached in 18% of surgery patients and 6% of controls. At 12 years, 13% of the surgery patients and none of the controls met this metric, Dr. Courcoulas said.

The duration of diabetes a person had before undergoing bariatric surgery “may be an important factor” as to whether patients undergo remission, suggested Dr. Eckel. He noted that longer duration type 2 diabetes usually results in increased glucose intolerance and makes remission less likely

Roux-en-Y gastric bypass appeared to have the best rates of patients achieving both lower A1c levels and more weight loss, followed by sleeve gastrectomy and gastric banding, which had the worst performance. But Dr. Courcoulas cautioned that the study was underpowered to reliably compare individual surgical procedures.

In terms of those with an A1c < 7.0%, surgery patients maintained a steady prevalence rate of about 55% during the first 5 years of follow-up, roughly twice the rate of controls, at 28% during all years of follow-up starting at year 5.

About 37% of enrolled patients had a BMI < 35 kg/m², and the A1c-lowering benefit and weight loss in this subgroup were consistent with the overall findings, which supports consideration of bariatric surgery for people with type 2 diabetes and a BMI < 35 kg/m², Dr. Courcoulas said.

She also highlighted that bariatric surgery was linked with significant reductions in triglyceride levels and increased high-density lipoprotein cholesterol levels, compared with controls. However, 22% of surgery patients experienced abdominal pain, compared with 10% of controls, and 7% experienced dysphagia, compared with no cases among the controls.

ARMMS-T2D received no commercial funding. Dr. Courcoulas had no disclosures. Dr. Eckel has been a consultant to numerous companies but said he had no relevant disclosures.

A version of this article first appeared on Medscape.com.

Continuous glucose monitors (CGMs) may help curb the severity of hypoglycemia after weight loss operations and even other gastrointestinal procedures, according to recent findings from a small study published in Diabetes, Obesity, and Metabolism.

Hypoglycemia is a chronic and persistent complication common in patients following bariatric surgery, affecting as many as 30% of people who undergo a sleeve gastrectomy or Roux-en-Y gastric bypass.

The symptoms of hypoglycemia, including lightheadedness, heart palpitations, difficulty concentrating, and confusion, can mimic anxiety disorders, arrhythmia, and dumping syndrome.

If a postoperative patient experiences these symptoms within a few hours following a meal or exercising, “primary care doctors should consider the possibility that hypoglycemia may be a contributor,” said Mary-Elizabeth Patti, MD, director of the Hypoglycemia Clinic at the Joslin Diabetes Center in Boston and senior author of the new study. 

“In fact, hypoglycemia is a possible diagnosis even among those who underwent [operations other than bariatric, including] fundoplication or other upper gastrointestinal or esophageal surgeries,” she said. 

To understand how CGM could benefit patients, Dr. Patti and colleagues recruited 22 participants who had undergone bariatric surgery more than 8 years prior and had postbariatric hypoglycemia. Their mean age was 51 years, 90% were women, 82% were diagnosed with level 3 hypoglycemia, and none had type 1 or 2 diabetes. 

All participants experienced neuronal dysfunction with symptoms like fatigue, concentration difficulties, and confusion. More than 90% had received medical nutrition therapy for postbariatric hypoglycemia in the past.

CGM data were collected in the 22 individuals in two sequential phases: masked (no access to sensor glucose or alarms) and unmasked (access to sensor glucose and alarms for low or rapidly declining sensor glucose). Twelve participants wore a CGM (Dexcom G4 device) for a total of 28 days, whereas 10 wore a CGM (the Dexcom G6 device) for a total of 20 days.

The team observed that the percentage of time when the participants’ blood glucose was below 70 mg/dL – the definition of hypoglycemia – was significantly lower during the unmasked phase. 

Though CGM devices are not sensitive enough to serve as a diagnostic tool for hypoglycemia, “the alarms on CGM devices can provide some much-needed awareness,” Dr. Patti said. “After a detailed diagnosis, CGM devices can be a helpful tool to assess dietary patterns and make modifications that could reduce the severity of postbariatric hypoglycemia.”

If a patient frequently experiences hypoglycemia, they may not sense when their glucose levels drop, also known as hypoglycemia unawareness, according to Dr. Patti. Studies have found that postbariatric hypoglycemia remains underdiagnosed because most patients are asymptomatic. 

“The use of CGM devices may improve safety in postbariatric hypoglycemia, particularly for patients with hypoglycemia unawareness,” the researchers conclude.
 

Next steps 

Patients are more vulnerable to hypoglycemia after a sleeve gastrectomy or gastric bypass surgery because these procedures involve removing the pylorus. This valve plays a crucial role in only allowing small portions of food to enter the intestine and prevents sudden spikes in blood glucose.

Without the pylorus, large amounts of food directly enter the intestine and soon result in large amounts of glucose getting absorbed, according to Sriram Machineni, MD, an associate professor of medicine at Albert Einstein College of Medicine, New York, who was not affiliated with the study.

“The pancreas then goes into overdrive and produces a lot of insulin, which continues reducing sugar levels,” Dr. Machineni said. “That is what causes hypoglycemia.”

Dr. Patti and associates are next working on research using CGM-derived data to investigate how different types of meals, physical activities, and other factors could influence glucose metabolism patterns in patients with hypoglycemia.

The study was funded by Dexcom, a manufacturer of continuous glucose monitoring systems. Dr. Patti reported receiving grant funding from the Diabetes Research Center.

A version of this article appeared on Medscape.com.

Continuous glucose monitors (CGMs) may help curb the severity of hypoglycemia after weight loss operations and even other gastrointestinal procedures, according to recent findings from a small study published in Diabetes, Obesity, and Metabolism.

Hypoglycemia is a chronic and persistent complication common in patients following bariatric surgery, affecting as many as 30% of people who undergo a sleeve gastrectomy or Roux-en-Y gastric bypass.

The symptoms of hypoglycemia, including lightheadedness, heart palpitations, difficulty concentrating, and confusion, can mimic anxiety disorders, arrhythmia, and dumping syndrome.

If a postoperative patient experiences these symptoms within a few hours following a meal or exercising, “primary care doctors should consider the possibility that hypoglycemia may be a contributor,” said Mary-Elizabeth Patti, MD, director of the Hypoglycemia Clinic at the Joslin Diabetes Center in Boston and senior author of the new study. 

“In fact, hypoglycemia is a possible diagnosis even among those who underwent [operations other than bariatric, including] fundoplication or other upper gastrointestinal or esophageal surgeries,” she said. 

To understand how CGM could benefit patients, Dr. Patti and colleagues recruited 22 participants who had undergone bariatric surgery more than 8 years prior and had postbariatric hypoglycemia. Their mean age was 51 years, 90% were women, 82% were diagnosed with level 3 hypoglycemia, and none had type 1 or 2 diabetes. 

All participants experienced neuronal dysfunction with symptoms like fatigue, concentration difficulties, and confusion. More than 90% had received medical nutrition therapy for postbariatric hypoglycemia in the past.

CGM data were collected in the 22 individuals in two sequential phases: masked (no access to sensor glucose or alarms) and unmasked (access to sensor glucose and alarms for low or rapidly declining sensor glucose). Twelve participants wore a CGM (Dexcom G4 device) for a total of 28 days, whereas 10 wore a CGM (the Dexcom G6 device) for a total of 20 days.

The team observed that the percentage of time when the participants’ blood glucose was below 70 mg/dL – the definition of hypoglycemia – was significantly lower during the unmasked phase. 

Though CGM devices are not sensitive enough to serve as a diagnostic tool for hypoglycemia, “the alarms on CGM devices can provide some much-needed awareness,” Dr. Patti said. “After a detailed diagnosis, CGM devices can be a helpful tool to assess dietary patterns and make modifications that could reduce the severity of postbariatric hypoglycemia.”

If a patient frequently experiences hypoglycemia, they may not sense when their glucose levels drop, also known as hypoglycemia unawareness, according to Dr. Patti. Studies have found that postbariatric hypoglycemia remains underdiagnosed because most patients are asymptomatic. 

“The use of CGM devices may improve safety in postbariatric hypoglycemia, particularly for patients with hypoglycemia unawareness,” the researchers conclude.
 

Next steps 

Patients are more vulnerable to hypoglycemia after a sleeve gastrectomy or gastric bypass surgery because these procedures involve removing the pylorus. This valve plays a crucial role in only allowing small portions of food to enter the intestine and prevents sudden spikes in blood glucose.

Without the pylorus, large amounts of food directly enter the intestine and soon result in large amounts of glucose getting absorbed, according to Sriram Machineni, MD, an associate professor of medicine at Albert Einstein College of Medicine, New York, who was not affiliated with the study.

“The pancreas then goes into overdrive and produces a lot of insulin, which continues reducing sugar levels,” Dr. Machineni said. “That is what causes hypoglycemia.”

Dr. Patti and associates are next working on research using CGM-derived data to investigate how different types of meals, physical activities, and other factors could influence glucose metabolism patterns in patients with hypoglycemia.

The study was funded by Dexcom, a manufacturer of continuous glucose monitoring systems. Dr. Patti reported receiving grant funding from the Diabetes Research Center.

A version of this article appeared on Medscape.com.

Continuous glucose monitors (CGMs) may help curb the severity of hypoglycemia after weight loss operations and even other gastrointestinal procedures, according to recent findings from a small study published in Diabetes, Obesity, and Metabolism.

Hypoglycemia is a chronic and persistent complication common in patients following bariatric surgery, affecting as many as 30% of people who undergo a sleeve gastrectomy or Roux-en-Y gastric bypass.

The symptoms of hypoglycemia, including lightheadedness, heart palpitations, difficulty concentrating, and confusion, can mimic anxiety disorders, arrhythmia, and dumping syndrome.

If a postoperative patient experiences these symptoms within a few hours following a meal or exercising, “primary care doctors should consider the possibility that hypoglycemia may be a contributor,” said Mary-Elizabeth Patti, MD, director of the Hypoglycemia Clinic at the Joslin Diabetes Center in Boston and senior author of the new study. 

“In fact, hypoglycemia is a possible diagnosis even among those who underwent [operations other than bariatric, including] fundoplication or other upper gastrointestinal or esophageal surgeries,” she said. 

To understand how CGM could benefit patients, Dr. Patti and colleagues recruited 22 participants who had undergone bariatric surgery more than 8 years prior and had postbariatric hypoglycemia. Their mean age was 51 years, 90% were women, 82% were diagnosed with level 3 hypoglycemia, and none had type 1 or 2 diabetes. 

All participants experienced neuronal dysfunction with symptoms like fatigue, concentration difficulties, and confusion. More than 90% had received medical nutrition therapy for postbariatric hypoglycemia in the past.

CGM data were collected in the 22 individuals in two sequential phases: masked (no access to sensor glucose or alarms) and unmasked (access to sensor glucose and alarms for low or rapidly declining sensor glucose). Twelve participants wore a CGM (Dexcom G4 device) for a total of 28 days, whereas 10 wore a CGM (the Dexcom G6 device) for a total of 20 days.

The team observed that the percentage of time when the participants’ blood glucose was below 70 mg/dL – the definition of hypoglycemia – was significantly lower during the unmasked phase. 

Though CGM devices are not sensitive enough to serve as a diagnostic tool for hypoglycemia, “the alarms on CGM devices can provide some much-needed awareness,” Dr. Patti said. “After a detailed diagnosis, CGM devices can be a helpful tool to assess dietary patterns and make modifications that could reduce the severity of postbariatric hypoglycemia.”

If a patient frequently experiences hypoglycemia, they may not sense when their glucose levels drop, also known as hypoglycemia unawareness, according to Dr. Patti. Studies have found that postbariatric hypoglycemia remains underdiagnosed because most patients are asymptomatic. 

“The use of CGM devices may improve safety in postbariatric hypoglycemia, particularly for patients with hypoglycemia unawareness,” the researchers conclude.
 

Next steps 

Patients are more vulnerable to hypoglycemia after a sleeve gastrectomy or gastric bypass surgery because these procedures involve removing the pylorus. This valve plays a crucial role in only allowing small portions of food to enter the intestine and prevents sudden spikes in blood glucose.

Without the pylorus, large amounts of food directly enter the intestine and soon result in large amounts of glucose getting absorbed, according to Sriram Machineni, MD, an associate professor of medicine at Albert Einstein College of Medicine, New York, who was not affiliated with the study.

“The pancreas then goes into overdrive and produces a lot of insulin, which continues reducing sugar levels,” Dr. Machineni said. “That is what causes hypoglycemia.”

Dr. Patti and associates are next working on research using CGM-derived data to investigate how different types of meals, physical activities, and other factors could influence glucose metabolism patterns in patients with hypoglycemia.

The study was funded by Dexcom, a manufacturer of continuous glucose monitoring systems. Dr. Patti reported receiving grant funding from the Diabetes Research Center.

A version of this article appeared on Medscape.com.

Up to one in four patients who undergo metabolic/bariatric surgery have less than 20% weight loss and patients need additional strategies to help them reach their goals.

In the new BARI-OPTIMISE trial, patients with poor weight loss after such surgery were randomized to the glucagonlike peptide–1 (GLP-1) agonist liraglutide 3.0 mg/day or placebo. Liraglutide was safe and well-tolerated and led to a clinically meaningful 8% further reduction in bodyweight, compared with placebo, report Jessica Mok, BMBS, MPhil, University College London and colleagues, in their study published online in JAMA Surgery.

Weight loss in BARI-OPTIMISE (–9.2 kg or –20 lb) was greater than the weight loss in the earlier GRAVITAS trial of 80 patients with persistent or recurrent type 2 diabetes randomized to liraglutide 1.8 mg/day or placebo, Dr. Mok and colleagues note. And more patients in BARI-OPTIMISE than in GRAVITAS lost 5% or more of their baseline weight (72% vs. 46%).

“Our findings therefore suggest that liraglutide, 3.0 mg, may have a role in the treatment of people with poor weight loss following metabolic surgery,” they write.  

However, newer gut hormone–based therapies with greater efficacy than liraglutide 3.0 mg (for example, semaglutide and tirzepatide) are emerging, they add.

Therefore, “randomized clinical trials investigating the efficacy of novel pharmaceutical agents will be needed to generate the evidence required to deliver individualized precision-medicine approaches to patients with obesity and suboptimal weight loss following metabolic surgery,” the researchers urge.
 

‘Extremely welcome tools for severe obesity’

“The additional weight loss with associated favorable metabolic changes achieved with liraglutide reported in [the BARI-OPTIMISE and GRAVITAS trials] is extremely welcomed with the new antiobesity medications ... adding another effective tool in the toolbox for the treatment of severe obesity,” Paulina Salminen, MD, PhD, Turku (Finland) University Hospital, and Ali Aminian, MD, Cleveland Clinic, write in an accompanying editorial.

However, they also point to limitations of the current trial.

Almost all patients (65 of 70 [93%]) underwent laparoscopic sleeve gastrectomy in BARI-OPTIMISE. However, “there are safe and more effective surgical options that can be considered in patients with suboptimal initial clinical response or recurrent weight gain” after laparoscopic sleeve gastrectomy, such as “conversion to Roux-en-Y gastric bypass (RYGB), duodenal switch, or single-anastomosis duodeno-ileal bypass,” they note.

The small number of patients and low follow-up rate of 81% (57 of 70 patients) for the short intervention are other limitations.

“In treating a patient with ischemic heart disease, a combination of lifestyle intervention, risk factor modification, pharmacotherapy, coronary stenting, and open-heart surgery may be needed,” note the editorialists. “A very similar concept would be applicable in the management of severe obesity.”

In the past, they add, there was not much progress with combination therapies for obesity because of a lack of effective antiobesity medications.

However, “with the better availability of potent [antiobesity medications] now and in the near future, the practice of combination therapy will grow as [metabolic and bariatric surgery] and [antiobesity medications] work in synergy in both treating severe obesity and hopefully also in enabling increased access to effective obesity treatment,” Dr. Salminen and Dr. Aminian speculate.

“Hopefully, based on findings of future studies and the use of global uniform criteria for evaluating treatment outcomes,” the editorialists conclude, “we can develop practice guidelines to assist and optimize phenotype-tailored multimodal treatment of this heterogeneous chronic disease of severe obesity.”
 

Most patients had severe obesity, sleeve gastrectomy

Individuals with poor weight loss after surgery have increased appetite coupled with an unfavorable gut hormone profile, including lower circulating GLP-1 levels, Dr. Mok and colleagues note.

In 2018 and 2019, they recruited and randomized 70 adults who had had metabolic surgery at two hospitals in London at least a year earlier and had 20% or less weight loss, compared with the day of surgery, as well as a suboptimal nutrient-stimulated GLP-1 response.

Patients were excluded if they had type 1 diabetes or were taking a GLP-1 agonist, insulin, or other medications that can affect weight, among other criteria.

The mean age of patients was 48 years, and 74% were women; 13% had type 2 diabetes.

Participants had a mean weight of 120 kg, and a mean body mass index of 43 kg/m² (57% had a BMI ≥ 40 kg/m²). Almost all patients (93%) had had sleeve gastrectomy and 7% had RYGB.

On average, they had surgery 4.3 years earlier and had lost 7% of their initial weight.

Patients were randomized 1:1 to receive liraglutide 3.0 mg or placebo daily for 24 weeks. All patients received dietary counseling and aimed for a 500 kcal/day energy deficit. They were encouraged to do a minimum of 150 minutes of moderate to vigorous exercise each week.

The primary endpoint, percentage change in body weight from baseline to week 24, was –8.8% with liraglutide versus –0.53% with placebo.

Adverse effects were predominantly gastrointestinal in nature and were more frequent with liraglutide (80%) than placebo (57%). There were no serious adverse events.

This study was funded by the Sir Jules Thorn Charitable Trust and the National Institute for Health and Care Research. Novo Nordisk provided the liraglutide and placebo pens. Author disclosures are listed with the article. Dr. Salminen has reported receiving personal fees from Novo Nordisk. Dr. Aminian has reported receiving received grants and personal fees from Medtronic and Ethicon.

A version of this article appeared on Medscape.com.

Up to one in four patients who undergo metabolic/bariatric surgery have less than 20% weight loss and patients need additional strategies to help them reach their goals.

In the new BARI-OPTIMISE trial, patients with poor weight loss after such surgery were randomized to the glucagonlike peptide–1 (GLP-1) agonist liraglutide 3.0 mg/day or placebo. Liraglutide was safe and well-tolerated and led to a clinically meaningful 8% further reduction in bodyweight, compared with placebo, report Jessica Mok, BMBS, MPhil, University College London and colleagues, in their study published online in JAMA Surgery.

Weight loss in BARI-OPTIMISE (–9.2 kg or –20 lb) was greater than the weight loss in the earlier GRAVITAS trial of 80 patients with persistent or recurrent type 2 diabetes randomized to liraglutide 1.8 mg/day or placebo, Dr. Mok and colleagues note. And more patients in BARI-OPTIMISE than in GRAVITAS lost 5% or more of their baseline weight (72% vs. 46%).

“Our findings therefore suggest that liraglutide, 3.0 mg, may have a role in the treatment of people with poor weight loss following metabolic surgery,” they write.  

However, newer gut hormone–based therapies with greater efficacy than liraglutide 3.0 mg (for example, semaglutide and tirzepatide) are emerging, they add.

Therefore, “randomized clinical trials investigating the efficacy of novel pharmaceutical agents will be needed to generate the evidence required to deliver individualized precision-medicine approaches to patients with obesity and suboptimal weight loss following metabolic surgery,” the researchers urge.
 

‘Extremely welcome tools for severe obesity’

“The additional weight loss with associated favorable metabolic changes achieved with liraglutide reported in [the BARI-OPTIMISE and GRAVITAS trials] is extremely welcomed with the new antiobesity medications ... adding another effective tool in the toolbox for the treatment of severe obesity,” Paulina Salminen, MD, PhD, Turku (Finland) University Hospital, and Ali Aminian, MD, Cleveland Clinic, write in an accompanying editorial.

However, they also point to limitations of the current trial.

Almost all patients (65 of 70 [93%]) underwent laparoscopic sleeve gastrectomy in BARI-OPTIMISE. However, “there are safe and more effective surgical options that can be considered in patients with suboptimal initial clinical response or recurrent weight gain” after laparoscopic sleeve gastrectomy, such as “conversion to Roux-en-Y gastric bypass (RYGB), duodenal switch, or single-anastomosis duodeno-ileal bypass,” they note.

The small number of patients and low follow-up rate of 81% (57 of 70 patients) for the short intervention are other limitations.

“In treating a patient with ischemic heart disease, a combination of lifestyle intervention, risk factor modification, pharmacotherapy, coronary stenting, and open-heart surgery may be needed,” note the editorialists. “A very similar concept would be applicable in the management of severe obesity.”

In the past, they add, there was not much progress with combination therapies for obesity because of a lack of effective antiobesity medications.

However, “with the better availability of potent [antiobesity medications] now and in the near future, the practice of combination therapy will grow as [metabolic and bariatric surgery] and [antiobesity medications] work in synergy in both treating severe obesity and hopefully also in enabling increased access to effective obesity treatment,” Dr. Salminen and Dr. Aminian speculate.

“Hopefully, based on findings of future studies and the use of global uniform criteria for evaluating treatment outcomes,” the editorialists conclude, “we can develop practice guidelines to assist and optimize phenotype-tailored multimodal treatment of this heterogeneous chronic disease of severe obesity.”
 

Most patients had severe obesity, sleeve gastrectomy

Individuals with poor weight loss after surgery have increased appetite coupled with an unfavorable gut hormone profile, including lower circulating GLP-1 levels, Dr. Mok and colleagues note.

In 2018 and 2019, they recruited and randomized 70 adults who had had metabolic surgery at two hospitals in London at least a year earlier and had 20% or less weight loss, compared with the day of surgery, as well as a suboptimal nutrient-stimulated GLP-1 response.

Patients were excluded if they had type 1 diabetes or were taking a GLP-1 agonist, insulin, or other medications that can affect weight, among other criteria.

The mean age of patients was 48 years, and 74% were women; 13% had type 2 diabetes.

Participants had a mean weight of 120 kg, and a mean body mass index of 43 kg/m² (57% had a BMI ≥ 40 kg/m²). Almost all patients (93%) had had sleeve gastrectomy and 7% had RYGB.

On average, they had surgery 4.3 years earlier and had lost 7% of their initial weight.

Patients were randomized 1:1 to receive liraglutide 3.0 mg or placebo daily for 24 weeks. All patients received dietary counseling and aimed for a 500 kcal/day energy deficit. They were encouraged to do a minimum of 150 minutes of moderate to vigorous exercise each week.

The primary endpoint, percentage change in body weight from baseline to week 24, was –8.8% with liraglutide versus –0.53% with placebo.

Adverse effects were predominantly gastrointestinal in nature and were more frequent with liraglutide (80%) than placebo (57%). There were no serious adverse events.

This study was funded by the Sir Jules Thorn Charitable Trust and the National Institute for Health and Care Research. Novo Nordisk provided the liraglutide and placebo pens. Author disclosures are listed with the article. Dr. Salminen has reported receiving personal fees from Novo Nordisk. Dr. Aminian has reported receiving received grants and personal fees from Medtronic and Ethicon.

A version of this article appeared on Medscape.com.

Up to one in four patients who undergo metabolic/bariatric surgery have less than 20% weight loss and patients need additional strategies to help them reach their goals.

In the new BARI-OPTIMISE trial, patients with poor weight loss after such surgery were randomized to the glucagonlike peptide–1 (GLP-1) agonist liraglutide 3.0 mg/day or placebo. Liraglutide was safe and well-tolerated and led to a clinically meaningful 8% further reduction in bodyweight, compared with placebo, report Jessica Mok, BMBS, MPhil, University College London and colleagues, in their study published online in JAMA Surgery.

Weight loss in BARI-OPTIMISE (–9.2 kg or –20 lb) was greater than the weight loss in the earlier GRAVITAS trial of 80 patients with persistent or recurrent type 2 diabetes randomized to liraglutide 1.8 mg/day or placebo, Dr. Mok and colleagues note. And more patients in BARI-OPTIMISE than in GRAVITAS lost 5% or more of their baseline weight (72% vs. 46%).

“Our findings therefore suggest that liraglutide, 3.0 mg, may have a role in the treatment of people with poor weight loss following metabolic surgery,” they write.  

However, newer gut hormone–based therapies with greater efficacy than liraglutide 3.0 mg (for example, semaglutide and tirzepatide) are emerging, they add.

Therefore, “randomized clinical trials investigating the efficacy of novel pharmaceutical agents will be needed to generate the evidence required to deliver individualized precision-medicine approaches to patients with obesity and suboptimal weight loss following metabolic surgery,” the researchers urge.
 

‘Extremely welcome tools for severe obesity’

“The additional weight loss with associated favorable metabolic changes achieved with liraglutide reported in [the BARI-OPTIMISE and GRAVITAS trials] is extremely welcomed with the new antiobesity medications ... adding another effective tool in the toolbox for the treatment of severe obesity,” Paulina Salminen, MD, PhD, Turku (Finland) University Hospital, and Ali Aminian, MD, Cleveland Clinic, write in an accompanying editorial.

However, they also point to limitations of the current trial.

Almost all patients (65 of 70 [93%]) underwent laparoscopic sleeve gastrectomy in BARI-OPTIMISE. However, “there are safe and more effective surgical options that can be considered in patients with suboptimal initial clinical response or recurrent weight gain” after laparoscopic sleeve gastrectomy, such as “conversion to Roux-en-Y gastric bypass (RYGB), duodenal switch, or single-anastomosis duodeno-ileal bypass,” they note.

The small number of patients and low follow-up rate of 81% (57 of 70 patients) for the short intervention are other limitations.

“In treating a patient with ischemic heart disease, a combination of lifestyle intervention, risk factor modification, pharmacotherapy, coronary stenting, and open-heart surgery may be needed,” note the editorialists. “A very similar concept would be applicable in the management of severe obesity.”

In the past, they add, there was not much progress with combination therapies for obesity because of a lack of effective antiobesity medications.

However, “with the better availability of potent [antiobesity medications] now and in the near future, the practice of combination therapy will grow as [metabolic and bariatric surgery] and [antiobesity medications] work in synergy in both treating severe obesity and hopefully also in enabling increased access to effective obesity treatment,” Dr. Salminen and Dr. Aminian speculate.

“Hopefully, based on findings of future studies and the use of global uniform criteria for evaluating treatment outcomes,” the editorialists conclude, “we can develop practice guidelines to assist and optimize phenotype-tailored multimodal treatment of this heterogeneous chronic disease of severe obesity.”
 

Most patients had severe obesity, sleeve gastrectomy

Individuals with poor weight loss after surgery have increased appetite coupled with an unfavorable gut hormone profile, including lower circulating GLP-1 levels, Dr. Mok and colleagues note.

In 2018 and 2019, they recruited and randomized 70 adults who had had metabolic surgery at two hospitals in London at least a year earlier and had 20% or less weight loss, compared with the day of surgery, as well as a suboptimal nutrient-stimulated GLP-1 response.

Patients were excluded if they had type 1 diabetes or were taking a GLP-1 agonist, insulin, or other medications that can affect weight, among other criteria.

The mean age of patients was 48 years, and 74% were women; 13% had type 2 diabetes.

Participants had a mean weight of 120 kg, and a mean body mass index of 43 kg/m² (57% had a BMI ≥ 40 kg/m²). Almost all patients (93%) had had sleeve gastrectomy and 7% had RYGB.

On average, they had surgery 4.3 years earlier and had lost 7% of their initial weight.

Patients were randomized 1:1 to receive liraglutide 3.0 mg or placebo daily for 24 weeks. All patients received dietary counseling and aimed for a 500 kcal/day energy deficit. They were encouraged to do a minimum of 150 minutes of moderate to vigorous exercise each week.

The primary endpoint, percentage change in body weight from baseline to week 24, was –8.8% with liraglutide versus –0.53% with placebo.

Adverse effects were predominantly gastrointestinal in nature and were more frequent with liraglutide (80%) than placebo (57%). There were no serious adverse events.

This study was funded by the Sir Jules Thorn Charitable Trust and the National Institute for Health and Care Research. Novo Nordisk provided the liraglutide and placebo pens. Author disclosures are listed with the article. Dr. Salminen has reported receiving personal fees from Novo Nordisk. Dr. Aminian has reported receiving received grants and personal fees from Medtronic and Ethicon.

A version of this article appeared on Medscape.com.

Although multiple international medical societies over recent years have recommended lowering the threshold for bariatric surgery to a body mass index (BMI) of 30-35 (class 1 obesity) in certain patients, very few patients in this weight category have had such surgery, according to a new study.

On the basis of data from a large U.S. national registry, during 2015 through 2021, just 3.5% of metabolic and bariatric surgeries were performed in patients with class 1 obesity each year.

Most surgeries (96.5%) were in patients with a BMI greater than 35. This reflects advice from a 1991 consensus statement by the National Institutes of Health stating that bariatric surgery can be offered to patients with BMI greater than or equal to 40, or greater than or equal to 35 with comorbidities.

However, medical societies have recommended lower cutoffs in position statements in 2016, 2018, and 2022.

Paul Wisniowski, MD, a surgical resident at Keck School of Medicine of University of Southern California, Los Angeles, presented the study findings in an e-poster at the annual meeting of the American Society for Metabolic & Bariatric Surgery.

“Professional guidelines and increasing data support bariatric surgery for patients beginning at BMI 30, which is a tipping point for disease progression. Now it needs to happen in the real world,” outgoing ASMBS president Teresa LaMasters, MD, who was not involved with this research, said in an ASMBS press release.

‘Not unexpected,’ ‘need to expand eligibility’

“We expected that there had been little widespread adoption of the new BMI criteria/cutoffs,” senior study author Matthew J. Martin, MD, said in an interview.

“We know that bariatric surgery is already underutilized, as only about 1%-2% of eligible patients who would benefit end up getting surgery,” added Dr. Martin, Chief, Emergency General Surgery, and Director, Acute Care Surgery Research, USC Medical Center and Keck School of Medicine.

He suggests that the main reason that more patients with lower BMIs are not being offered surgery is related to insurance coverage and reimbursement.

“Even though the professional society guidelines have changed, based on the scientific evidence, most insurers are still using the very outdated (1990s) NIH consensus criteria of BMI greater than 35 with comorbidities, or BMI greater than 40.”

Another potential reason is “the lack of awareness of the changing guidelines and recommendation among primary care physicians who refer patients for a bariatric surgery evaluation.”

“I think it is too early in the experience with the new, more effective antiobesity medications to say which group will benefit the most or will prefer them over surgery,” he said.

“There is still only a small minority of patients who end up getting the [newer antiobesity] medications or surgery.”

“The takeaway,” Dr. Martin summarized, “is that bariatric surgery remains the only intervention with a high success rate for patients with class 1 or higher obesity in terms of weight loss, comorbidity improvement or resolution, and sustained health benefits.”

“We need to expand the availability of bariatric surgery for all eligible patients, particularly the class 1 obesity population who are currently the most underserved,” he said.

“This will take continued lobbying and working with the insurance companies to update their guidelines/criteria, education of patients, and education of primary care physicians so that patients can be appropriately referred for a surgical evaluation.”
 

Surgery vs. pharmacotherapy

Invited to comment on this study, Neil Skolnik, MD, who was not involved with this research, noted that data from patients with a lower BMI “has continued to accumulate, showing much greater safety than earlier studies and giving further support of efficacy.”

However, “[new] recommendations take time to take hold,” noted Dr. Skolnik, a family physician and professor in the department of family medicine, Thomas Jefferson University, Philadelphia.

“And from March of 2020 through 2021, surgery referrals were likely influenced by the COVID pandemic,” he added in an email.

Dr. Skolnik authored a commentary sharing his reservations about ASMBS recommendations issued in 2022 for lower BMI thresholds for this surgery.

“Medications are a safe, effective option for patients with a BMI from 30 to 35,” he said, “and [they] achieve approximately a 15%-20% average weight loss, which is enough to markedly improved both metabolic parameters and biomechanical issues such as knee pain, hip pain, and back pain.”

However, “bariatric surgery remains an excellent option for patients who do not respond sufficiently to pharmacotherapy,” he acknowledged.
 

National registry study, 2015-2021

Dr. Wisniowski and colleagues analyzed data from around 900 U.S. centers that are currently part of the Metabolic Bariatric Surgery Accreditation Quality Improvement Program.

They found that from 2015 to 2021, 38,669 patients (3.5%) with type 1 obesity and 1,1067,094 patients (96.5%) with a higher BMI had metabolic and bariatric surgery.

Compared with patients with BMI greater than 35, those with class 1 obesity had shorter operating times and hospital stays, but they lost less weight on short-term evaluation, after multivariable adjustment.

There were no significant differences between the two patient groups in rates of postoperative complications (< 5%) or mortality (< 0.1%).

Sleeve gastrectomy was the most common procedure and increased from 70% to 76% of all procedures during the study period.
 

Single-center study

In a second e-poster presented at the meeting, Tina T. Thomas, MD, New Jersey Bariatric Center, analyzed data from 23 patients with BMI less than 35 or less than 30 with comorbidities who had sleeve gastrectomy or Roux-en-Y gastric bypass at their center during 2017 to 2021 and who had 6 months of follow-up data.

At study entry, the patients had a mean BMI of 33.5. At 6 months after the surgery, they had a mean BMI of 25.6, and on average, they had lost 55% of their excess weight.

Nearly 60% of the patients had lost at least 50% of their excess weight, and 9 of 16 patients (56%) with comorbidities had improved or resolved comorbidities. None of the patients died or had surgery-related complications.

“Our study shows significant weight loss and health benefits, as well as the safety and efficacy of the gastric bypass and gastric sleeve procedures, for this patient population,” Ajay Goyal, MD, senior author, and bariatric surgeon at New Jersey Bariatric Center, said in an ASMBS press release.

“Often by the time a patient qualifies for bariatric surgery, their weight-related medical conditions such as [type 2] diabetes and hypertension are severe. By expanding access to bariatric surgery to patients with a lower BMI with obesity-related illnesses, patients can halt the progression, and in some cases resolve, significant and uncontrolled weight-related chronic diseases through weight loss.”
 

Societies call for lower BMI thresholds

Providers, hospitals, and insurers currently use BMI thresholds greater than or equal to 40, or greater than or equal to 35 with an obesity-related comorbidity, to define patients eligible for metabolic and bariatric surgery, based on criteria established in a 1991 consensus statement by NIH.

As more data accumulated, in 2016, a position statement from 45 societies recommended that bariatric surgery should be “considered for patients with [type 2 diabetes] and BMI 30.0-34.9 kg/m² if hyperglycemia is inadequately controlled” despite optimal medical treatment.

Similarly, in 2018, the ASMBS issued a position statement saying that “for patients with BMI 30-35 kg/m² and obesity-related comorbidities who do not achieve substantial, durable weight loss and comorbidity improvement with reasonable nonsurgical methods, bariatric surgery should be offered” to suitable individuals.

Then in October 2022, the ASMBS and International Federation for the Surgery of Obesity and Metabolic Disorders issued a joint statement that recommended lowering the thresholds for bariatric surgery to a BMI greater than or equal to 35 or greater than or equal to 30 with weight-related comorbidities.

A version of this article appeared on Medscape.com.

Although multiple international medical societies over recent years have recommended lowering the threshold for bariatric surgery to a body mass index (BMI) of 30-35 (class 1 obesity) in certain patients, very few patients in this weight category have had such surgery, according to a new study.

On the basis of data from a large U.S. national registry, during 2015 through 2021, just 3.5% of metabolic and bariatric surgeries were performed in patients with class 1 obesity each year.

Most surgeries (96.5%) were in patients with a BMI greater than 35. This reflects advice from a 1991 consensus statement by the National Institutes of Health stating that bariatric surgery can be offered to patients with BMI greater than or equal to 40, or greater than or equal to 35 with comorbidities.

However, medical societies have recommended lower cutoffs in position statements in 2016, 2018, and 2022.

Paul Wisniowski, MD, a surgical resident at Keck School of Medicine of University of Southern California, Los Angeles, presented the study findings in an e-poster at the annual meeting of the American Society for Metabolic & Bariatric Surgery.

“Professional guidelines and increasing data support bariatric surgery for patients beginning at BMI 30, which is a tipping point for disease progression. Now it needs to happen in the real world,” outgoing ASMBS president Teresa LaMasters, MD, who was not involved with this research, said in an ASMBS press release.

‘Not unexpected,’ ‘need to expand eligibility’

“We expected that there had been little widespread adoption of the new BMI criteria/cutoffs,” senior study author Matthew J. Martin, MD, said in an interview.

“We know that bariatric surgery is already underutilized, as only about 1%-2% of eligible patients who would benefit end up getting surgery,” added Dr. Martin, Chief, Emergency General Surgery, and Director, Acute Care Surgery Research, USC Medical Center and Keck School of Medicine.

He suggests that the main reason that more patients with lower BMIs are not being offered surgery is related to insurance coverage and reimbursement.

“Even though the professional society guidelines have changed, based on the scientific evidence, most insurers are still using the very outdated (1990s) NIH consensus criteria of BMI greater than 35 with comorbidities, or BMI greater than 40.”

Another potential reason is “the lack of awareness of the changing guidelines and recommendation among primary care physicians who refer patients for a bariatric surgery evaluation.”

“I think it is too early in the experience with the new, more effective antiobesity medications to say which group will benefit the most or will prefer them over surgery,” he said.

“There is still only a small minority of patients who end up getting the [newer antiobesity] medications or surgery.”

“The takeaway,” Dr. Martin summarized, “is that bariatric surgery remains the only intervention with a high success rate for patients with class 1 or higher obesity in terms of weight loss, comorbidity improvement or resolution, and sustained health benefits.”

“We need to expand the availability of bariatric surgery for all eligible patients, particularly the class 1 obesity population who are currently the most underserved,” he said.

“This will take continued lobbying and working with the insurance companies to update their guidelines/criteria, education of patients, and education of primary care physicians so that patients can be appropriately referred for a surgical evaluation.”
 

Surgery vs. pharmacotherapy

Invited to comment on this study, Neil Skolnik, MD, who was not involved with this research, noted that data from patients with a lower BMI “has continued to accumulate, showing much greater safety than earlier studies and giving further support of efficacy.”

However, “[new] recommendations take time to take hold,” noted Dr. Skolnik, a family physician and professor in the department of family medicine, Thomas Jefferson University, Philadelphia.

“And from March of 2020 through 2021, surgery referrals were likely influenced by the COVID pandemic,” he added in an email.

Dr. Skolnik authored a commentary sharing his reservations about ASMBS recommendations issued in 2022 for lower BMI thresholds for this surgery.

“Medications are a safe, effective option for patients with a BMI from 30 to 35,” he said, “and [they] achieve approximately a 15%-20% average weight loss, which is enough to markedly improved both metabolic parameters and biomechanical issues such as knee pain, hip pain, and back pain.”

However, “bariatric surgery remains an excellent option for patients who do not respond sufficiently to pharmacotherapy,” he acknowledged.
 

National registry study, 2015-2021

Dr. Wisniowski and colleagues analyzed data from around 900 U.S. centers that are currently part of the Metabolic Bariatric Surgery Accreditation Quality Improvement Program.

They found that from 2015 to 2021, 38,669 patients (3.5%) with type 1 obesity and 1,1067,094 patients (96.5%) with a higher BMI had metabolic and bariatric surgery.

Compared with patients with BMI greater than 35, those with class 1 obesity had shorter operating times and hospital stays, but they lost less weight on short-term evaluation, after multivariable adjustment.

There were no significant differences between the two patient groups in rates of postoperative complications (< 5%) or mortality (< 0.1%).

Sleeve gastrectomy was the most common procedure and increased from 70% to 76% of all procedures during the study period.
 

Single-center study

In a second e-poster presented at the meeting, Tina T. Thomas, MD, New Jersey Bariatric Center, analyzed data from 23 patients with BMI less than 35 or less than 30 with comorbidities who had sleeve gastrectomy or Roux-en-Y gastric bypass at their center during 2017 to 2021 and who had 6 months of follow-up data.

At study entry, the patients had a mean BMI of 33.5. At 6 months after the surgery, they had a mean BMI of 25.6, and on average, they had lost 55% of their excess weight.

Nearly 60% of the patients had lost at least 50% of their excess weight, and 9 of 16 patients (56%) with comorbidities had improved or resolved comorbidities. None of the patients died or had surgery-related complications.

“Our study shows significant weight loss and health benefits, as well as the safety and efficacy of the gastric bypass and gastric sleeve procedures, for this patient population,” Ajay Goyal, MD, senior author, and bariatric surgeon at New Jersey Bariatric Center, said in an ASMBS press release.

“Often by the time a patient qualifies for bariatric surgery, their weight-related medical conditions such as [type 2] diabetes and hypertension are severe. By expanding access to bariatric surgery to patients with a lower BMI with obesity-related illnesses, patients can halt the progression, and in some cases resolve, significant and uncontrolled weight-related chronic diseases through weight loss.”
 

Societies call for lower BMI thresholds

Providers, hospitals, and insurers currently use BMI thresholds greater than or equal to 40, or greater than or equal to 35 with an obesity-related comorbidity, to define patients eligible for metabolic and bariatric surgery, based on criteria established in a 1991 consensus statement by NIH.

As more data accumulated, in 2016, a position statement from 45 societies recommended that bariatric surgery should be “considered for patients with [type 2 diabetes] and BMI 30.0-34.9 kg/m² if hyperglycemia is inadequately controlled” despite optimal medical treatment.

Similarly, in 2018, the ASMBS issued a position statement saying that “for patients with BMI 30-35 kg/m² and obesity-related comorbidities who do not achieve substantial, durable weight loss and comorbidity improvement with reasonable nonsurgical methods, bariatric surgery should be offered” to suitable individuals.

Then in October 2022, the ASMBS and International Federation for the Surgery of Obesity and Metabolic Disorders issued a joint statement that recommended lowering the thresholds for bariatric surgery to a BMI greater than or equal to 35 or greater than or equal to 30 with weight-related comorbidities.

A version of this article appeared on Medscape.com.

Although multiple international medical societies over recent years have recommended lowering the threshold for bariatric surgery to a body mass index (BMI) of 30-35 (class 1 obesity) in certain patients, very few patients in this weight category have had such surgery, according to a new study.

On the basis of data from a large U.S. national registry, during 2015 through 2021, just 3.5% of metabolic and bariatric surgeries were performed in patients with class 1 obesity each year.

Most surgeries (96.5%) were in patients with a BMI greater than 35. This reflects advice from a 1991 consensus statement by the National Institutes of Health stating that bariatric surgery can be offered to patients with BMI greater than or equal to 40, or greater than or equal to 35 with comorbidities.

However, medical societies have recommended lower cutoffs in position statements in 2016, 2018, and 2022.

Paul Wisniowski, MD, a surgical resident at Keck School of Medicine of University of Southern California, Los Angeles, presented the study findings in an e-poster at the annual meeting of the American Society for Metabolic & Bariatric Surgery.

“Professional guidelines and increasing data support bariatric surgery for patients beginning at BMI 30, which is a tipping point for disease progression. Now it needs to happen in the real world,” outgoing ASMBS president Teresa LaMasters, MD, who was not involved with this research, said in an ASMBS press release.

‘Not unexpected,’ ‘need to expand eligibility’

“We expected that there had been little widespread adoption of the new BMI criteria/cutoffs,” senior study author Matthew J. Martin, MD, said in an interview.

“We know that bariatric surgery is already underutilized, as only about 1%-2% of eligible patients who would benefit end up getting surgery,” added Dr. Martin, Chief, Emergency General Surgery, and Director, Acute Care Surgery Research, USC Medical Center and Keck School of Medicine.

He suggests that the main reason that more patients with lower BMIs are not being offered surgery is related to insurance coverage and reimbursement.

“Even though the professional society guidelines have changed, based on the scientific evidence, most insurers are still using the very outdated (1990s) NIH consensus criteria of BMI greater than 35 with comorbidities, or BMI greater than 40.”

Another potential reason is “the lack of awareness of the changing guidelines and recommendation among primary care physicians who refer patients for a bariatric surgery evaluation.”

“I think it is too early in the experience with the new, more effective antiobesity medications to say which group will benefit the most or will prefer them over surgery,” he said.

“There is still only a small minority of patients who end up getting the [newer antiobesity] medications or surgery.”

“The takeaway,” Dr. Martin summarized, “is that bariatric surgery remains the only intervention with a high success rate for patients with class 1 or higher obesity in terms of weight loss, comorbidity improvement or resolution, and sustained health benefits.”

“We need to expand the availability of bariatric surgery for all eligible patients, particularly the class 1 obesity population who are currently the most underserved,” he said.

“This will take continued lobbying and working with the insurance companies to update their guidelines/criteria, education of patients, and education of primary care physicians so that patients can be appropriately referred for a surgical evaluation.”
 

Surgery vs. pharmacotherapy

Invited to comment on this study, Neil Skolnik, MD, who was not involved with this research, noted that data from patients with a lower BMI “has continued to accumulate, showing much greater safety than earlier studies and giving further support of efficacy.”

However, “[new] recommendations take time to take hold,” noted Dr. Skolnik, a family physician and professor in the department of family medicine, Thomas Jefferson University, Philadelphia.

“And from March of 2020 through 2021, surgery referrals were likely influenced by the COVID pandemic,” he added in an email.

Dr. Skolnik authored a commentary sharing his reservations about ASMBS recommendations issued in 2022 for lower BMI thresholds for this surgery.

“Medications are a safe, effective option for patients with a BMI from 30 to 35,” he said, “and [they] achieve approximately a 15%-20% average weight loss, which is enough to markedly improved both metabolic parameters and biomechanical issues such as knee pain, hip pain, and back pain.”

However, “bariatric surgery remains an excellent option for patients who do not respond sufficiently to pharmacotherapy,” he acknowledged.
 

National registry study, 2015-2021

Dr. Wisniowski and colleagues analyzed data from around 900 U.S. centers that are currently part of the Metabolic Bariatric Surgery Accreditation Quality Improvement Program.

They found that from 2015 to 2021, 38,669 patients (3.5%) with type 1 obesity and 1,1067,094 patients (96.5%) with a higher BMI had metabolic and bariatric surgery.

Compared with patients with BMI greater than 35, those with class 1 obesity had shorter operating times and hospital stays, but they lost less weight on short-term evaluation, after multivariable adjustment.

There were no significant differences between the two patient groups in rates of postoperative complications (< 5%) or mortality (< 0.1%).

Sleeve gastrectomy was the most common procedure and increased from 70% to 76% of all procedures during the study period.
 

Single-center study

In a second e-poster presented at the meeting, Tina T. Thomas, MD, New Jersey Bariatric Center, analyzed data from 23 patients with BMI less than 35 or less than 30 with comorbidities who had sleeve gastrectomy or Roux-en-Y gastric bypass at their center during 2017 to 2021 and who had 6 months of follow-up data.

At study entry, the patients had a mean BMI of 33.5. At 6 months after the surgery, they had a mean BMI of 25.6, and on average, they had lost 55% of their excess weight.

Nearly 60% of the patients had lost at least 50% of their excess weight, and 9 of 16 patients (56%) with comorbidities had improved or resolved comorbidities. None of the patients died or had surgery-related complications.

“Our study shows significant weight loss and health benefits, as well as the safety and efficacy of the gastric bypass and gastric sleeve procedures, for this patient population,” Ajay Goyal, MD, senior author, and bariatric surgeon at New Jersey Bariatric Center, said in an ASMBS press release.

“Often by the time a patient qualifies for bariatric surgery, their weight-related medical conditions such as [type 2] diabetes and hypertension are severe. By expanding access to bariatric surgery to patients with a lower BMI with obesity-related illnesses, patients can halt the progression, and in some cases resolve, significant and uncontrolled weight-related chronic diseases through weight loss.”
 

Societies call for lower BMI thresholds

Providers, hospitals, and insurers currently use BMI thresholds greater than or equal to 40, or greater than or equal to 35 with an obesity-related comorbidity, to define patients eligible for metabolic and bariatric surgery, based on criteria established in a 1991 consensus statement by NIH.

As more data accumulated, in 2016, a position statement from 45 societies recommended that bariatric surgery should be “considered for patients with [type 2 diabetes] and BMI 30.0-34.9 kg/m² if hyperglycemia is inadequately controlled” despite optimal medical treatment.

Similarly, in 2018, the ASMBS issued a position statement saying that “for patients with BMI 30-35 kg/m² and obesity-related comorbidities who do not achieve substantial, durable weight loss and comorbidity improvement with reasonable nonsurgical methods, bariatric surgery should be offered” to suitable individuals.

Then in October 2022, the ASMBS and International Federation for the Surgery of Obesity and Metabolic Disorders issued a joint statement that recommended lowering the thresholds for bariatric surgery to a BMI greater than or equal to 35 or greater than or equal to 30 with weight-related comorbidities.

A version of this article appeared on Medscape.com.