Diabetes

At the recent American Diabetes Association (ADA) Scientific Sessions, researchers unveiled promising data on a novel antimicrobial peptide PL-5 spray. This innovative treatment shows significant promise for managing mild to moderate infected diabetic foot ulcers. 

Of the 1.6 million people with diabetes in the United States and the tens of millions of similar people worldwide, 50% will require antimicrobials at some time during their life cycle. Diabetic foot infections are difficult to treat because of their resistance to conventional therapies, often leading to severe complications, including amputations. 

To address this issue, the antimicrobial peptide PL-5 spray was developed with a novel mechanism of action to potentially improve treatment outcomes. The study aimed to assess the clinical efficacy and safety of the PL-5 spray combined with standard debridement procedures in treating mild to moderate diabetic foot ulcers.

This multicenter, randomized, double-blind, placebo-controlled clinical trial was conducted in four hospitals across China. Participants with mild to moderate diabetic foot ulcers were randomly assigned in a 2:1 ratio to either the PL-5 group or the placebo group, both receiving standard debridement. The primary endpoint was clinical efficacy at day 1 after the end of treatment (EOT1). Secondary endpoints included clinical efficacy at day 7 (EOT7), microbiological efficacy, drug-resistant bacteria clearance rate, wound healing rate, and safety outcomes evaluated at both EOT1 and EOT7.

The study included 47 participants, with 32 in the PL-5 group and 15 in the placebo group. Both groups had statistically comparable demographic and clinical characteristics. The primary endpoint showed a higher clinical efficacy (cure/improvement ratio) in the PL-5 group, compared with the control group (1.33 vs 0.55; P =.0764), suggesting a positive trend but not reaching statistical significance in this population.

Among the secondary endpoints, clinical efficacy at EOT7 was significantly higher in the PL-5 group than in the control group (1.6 vs 0.86). Microbial eradication rates were notably better in the PL-5 group at both EOT1 (57.89% vs 33.33%) and EOT7 (64.71% vs 40.00%). The clearance rates of drug-resistant bacteria were also higher in the PL-5 group at EOT1 (71.43% vs 50%).

Of importance, safety parameters showed no significant differences between the two groups (24.24% vs 33.33%), highlighting the favorable safety profile of PL-5 spray.

The study presented at the ADA Scientific Sessions provides a glint of promising evidence supporting the potential efficacy and safety of PL-5 spray in treating mild to moderate diabetic foot infections. Despite the limited sample size, the results suggest that PL-5 spray may enhance the recovery speed of diabetic foot wounds, particularly in clearing drug-resistant bacterial infections. These findings justify further investigation with larger sample sizes to confirm or refute the efficacy and potentially establish PL-5 spray as a standard treatment option in diabetic foot care.

The novel antimicrobial peptide PL-5 spray shows potential in addressing the challenging issue of diabetic foot infections. This recent ADA presentation sparked significant interest and discussions about the future of diabetic foot ulcer treatments, emphasizing the importance of innovative approaches in managing complex diabetic complications.

Dr. Armstrong is a professor of surgery and director of limb preservation at the University of Southern California, Los Angeles. He reported no relevant conflicts of interest.

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

At the recent American Diabetes Association (ADA) Scientific Sessions, researchers unveiled promising data on a novel antimicrobial peptide PL-5 spray. This innovative treatment shows significant promise for managing mild to moderate infected diabetic foot ulcers. 

Of the 1.6 million people with diabetes in the United States and the tens of millions of similar people worldwide, 50% will require antimicrobials at some time during their life cycle. Diabetic foot infections are difficult to treat because of their resistance to conventional therapies, often leading to severe complications, including amputations. 

To address this issue, the antimicrobial peptide PL-5 spray was developed with a novel mechanism of action to potentially improve treatment outcomes. The study aimed to assess the clinical efficacy and safety of the PL-5 spray combined with standard debridement procedures in treating mild to moderate diabetic foot ulcers.

This multicenter, randomized, double-blind, placebo-controlled clinical trial was conducted in four hospitals across China. Participants with mild to moderate diabetic foot ulcers were randomly assigned in a 2:1 ratio to either the PL-5 group or the placebo group, both receiving standard debridement. The primary endpoint was clinical efficacy at day 1 after the end of treatment (EOT1). Secondary endpoints included clinical efficacy at day 7 (EOT7), microbiological efficacy, drug-resistant bacteria clearance rate, wound healing rate, and safety outcomes evaluated at both EOT1 and EOT7.

The study included 47 participants, with 32 in the PL-5 group and 15 in the placebo group. Both groups had statistically comparable demographic and clinical characteristics. The primary endpoint showed a higher clinical efficacy (cure/improvement ratio) in the PL-5 group, compared with the control group (1.33 vs 0.55; P =.0764), suggesting a positive trend but not reaching statistical significance in this population.

Among the secondary endpoints, clinical efficacy at EOT7 was significantly higher in the PL-5 group than in the control group (1.6 vs 0.86). Microbial eradication rates were notably better in the PL-5 group at both EOT1 (57.89% vs 33.33%) and EOT7 (64.71% vs 40.00%). The clearance rates of drug-resistant bacteria were also higher in the PL-5 group at EOT1 (71.43% vs 50%).

Of importance, safety parameters showed no significant differences between the two groups (24.24% vs 33.33%), highlighting the favorable safety profile of PL-5 spray.

The study presented at the ADA Scientific Sessions provides a glint of promising evidence supporting the potential efficacy and safety of PL-5 spray in treating mild to moderate diabetic foot infections. Despite the limited sample size, the results suggest that PL-5 spray may enhance the recovery speed of diabetic foot wounds, particularly in clearing drug-resistant bacterial infections. These findings justify further investigation with larger sample sizes to confirm or refute the efficacy and potentially establish PL-5 spray as a standard treatment option in diabetic foot care.

The novel antimicrobial peptide PL-5 spray shows potential in addressing the challenging issue of diabetic foot infections. This recent ADA presentation sparked significant interest and discussions about the future of diabetic foot ulcer treatments, emphasizing the importance of innovative approaches in managing complex diabetic complications.

Dr. Armstrong is a professor of surgery and director of limb preservation at the University of Southern California, Los Angeles. He reported no relevant conflicts of interest.

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

At the recent American Diabetes Association (ADA) Scientific Sessions, researchers unveiled promising data on a novel antimicrobial peptide PL-5 spray. This innovative treatment shows significant promise for managing mild to moderate infected diabetic foot ulcers. 

Of the 1.6 million people with diabetes in the United States and the tens of millions of similar people worldwide, 50% will require antimicrobials at some time during their life cycle. Diabetic foot infections are difficult to treat because of their resistance to conventional therapies, often leading to severe complications, including amputations. 

To address this issue, the antimicrobial peptide PL-5 spray was developed with a novel mechanism of action to potentially improve treatment outcomes. The study aimed to assess the clinical efficacy and safety of the PL-5 spray combined with standard debridement procedures in treating mild to moderate diabetic foot ulcers.

This multicenter, randomized, double-blind, placebo-controlled clinical trial was conducted in four hospitals across China. Participants with mild to moderate diabetic foot ulcers were randomly assigned in a 2:1 ratio to either the PL-5 group or the placebo group, both receiving standard debridement. The primary endpoint was clinical efficacy at day 1 after the end of treatment (EOT1). Secondary endpoints included clinical efficacy at day 7 (EOT7), microbiological efficacy, drug-resistant bacteria clearance rate, wound healing rate, and safety outcomes evaluated at both EOT1 and EOT7.

The study included 47 participants, with 32 in the PL-5 group and 15 in the placebo group. Both groups had statistically comparable demographic and clinical characteristics. The primary endpoint showed a higher clinical efficacy (cure/improvement ratio) in the PL-5 group, compared with the control group (1.33 vs 0.55; P =.0764), suggesting a positive trend but not reaching statistical significance in this population.

Among the secondary endpoints, clinical efficacy at EOT7 was significantly higher in the PL-5 group than in the control group (1.6 vs 0.86). Microbial eradication rates were notably better in the PL-5 group at both EOT1 (57.89% vs 33.33%) and EOT7 (64.71% vs 40.00%). The clearance rates of drug-resistant bacteria were also higher in the PL-5 group at EOT1 (71.43% vs 50%).

Of importance, safety parameters showed no significant differences between the two groups (24.24% vs 33.33%), highlighting the favorable safety profile of PL-5 spray.

The study presented at the ADA Scientific Sessions provides a glint of promising evidence supporting the potential efficacy and safety of PL-5 spray in treating mild to moderate diabetic foot infections. Despite the limited sample size, the results suggest that PL-5 spray may enhance the recovery speed of diabetic foot wounds, particularly in clearing drug-resistant bacterial infections. These findings justify further investigation with larger sample sizes to confirm or refute the efficacy and potentially establish PL-5 spray as a standard treatment option in diabetic foot care.

The novel antimicrobial peptide PL-5 spray shows potential in addressing the challenging issue of diabetic foot infections. This recent ADA presentation sparked significant interest and discussions about the future of diabetic foot ulcer treatments, emphasizing the importance of innovative approaches in managing complex diabetic complications.

Dr. Armstrong is a professor of surgery and director of limb preservation at the University of Southern California, Los Angeles. He reported no relevant conflicts of interest.

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

Despite their best efforts, 80% of people who lose weight regain it and many end up heavier within 5 years. Why? Our bodies fight back, revving up hunger while slowing metabolism after weight loss. In ongoing obesity discussions, ghrelin is in the spotlight as the “hunger hormone” playing a crucial role in driving appetite and facilitating weight gain. 

Weight loss interventions, such as diet or gastric bypass surgery, may trigger an increase in ghrelin levels, potentially fueling long-term weight gain. Consequently, ghrelin remains a focal point of research into innovative antiobesity treatments. 

Ghrelin, a hormone produced in the stomach, is often called the “hunger hormone.” Ghrelin is a circulating orexigenic gut hormone with growth hormone–releasing activity. In the intricate balance of energy, central and peripheral peptides such as ghrelin, leptin, adiponectin, and insulin play crucial roles. They regulate hunger, fullness, and metabolic rates, shaping our body weight outcomes. 

Since the discovery of ghrelin, in 1999, research in mice and people has focused on its effect on regulating appetite and implications for long-term weight control. When hunger strikes, ghrelin levels surge, sending signals to the brain that ramp up the appetite. Following a meal, ghrelin decreases, indicating fullness. 

Studies have found that people who were injected with subcutaneous ghrelin experienced a 46% increase in hunger and ate 28% more at their next meal than those who didn’t receive a ghrelin injection.

We might expect high levels of ghrelin in individuals with obesity, but this is not the case. In fact, ghrelin levels are typically lower in individuals with obesity than in leaner individuals. This finding might seem to contradict the idea that obesity is due to high levels of the hunger hormone. 

Excess weight could increase sensitivity to ghrelin, where more receptors lead to higher hunger stimulation with less ghrelin. Beyond hunger, ghrelin can also lead us to eat for comfort, as when stressed or anxious. Ghrelin and synthetic ghrelin mimetics increase body weight and fat mass by activating receptors in the arcuate nucleus of the hypothalamus (Müller et al.; Bany Bakar et al.). There, it also activates the brain’s reward pathways, making us crave food even when we are not hungry. This connection between ghrelin and emotional eating can contribute to stress-induced obesity. 

In my clinical practice, I have seen individuals gain maximum weight when they are under more stress and are sleep-deprived. This is because ghrelin levels increased in these scenarios. This elevation of ghrelin in high-stress, low-sleep situations affects weight gain in women during the postpartum period and menopause. 

Evidence also suggests that certain foods affect ghrelin levels. After a person eats carbohydrates, their ghrelin levels initially decrease quickly, but this is followed by a rise in ghrelin, leading them to become hungry again. In contrast, protein intake helps suppress ghrelin levels for longer. Hence, we advise patients to increase protein intake while reducing their carb intake, or to always eat protein along with carbs.

It makes sense that when individuals with obesity lose weight by fasting or caloric restriction and try to maintain that weight loss, their bodies tend to produce more ghrelin. This effect might explain why people who lose weight often find it hard to keep it off: Rising ghrelin levels after weight loss might drive them to eat more and regain weight. 

Two prominent weight loss surgeries, sleeve gastrectomy (SG) and Roux-en-Y gastric bypass (RYGB), have opposite effects on ghrelin levels, reflecting their distinct mechanisms for weight loss. SG involves removal of the gastric fundus, where ghrelin is produced, resulting in a significant decrease in ghrelin levels; RYGB operates through malabsorption without directly affecting ghrelin production. Despite these differing approaches, both techniques demonstrate remarkable weight loss efficacy. Research comparing the two procedures reveals that SG leads to decreased fasting plasma ghrelin levels, whereas RYGB prompts an increase, highlighting the additional appetite-reducing mechanism of SG through ghrelin suppression. This contrast underscores the intricate role of ghrelin in appetite regulation and suggests that its manipulation can significantly influence weight loss outcomes.

With the effect of ghrelin in stimulating appetite being established, other studies have explored the relationship between ghrelin and insulin resistance. A meta-analysis by researchers at Qingdao University, Qingdao, China, found that circulating ghrelin levels were negatively correlated with insulin resistance in individuals with obesity and normal fasting glucose levels. The findings suggest that the role of ghrelin in obesity might extend beyond appetite regulation to influence metabolic pathways and that ghrelin may be a marker for predicting obesity.

Researchers are exploring potential therapeutic targets focusing on ghrelin modulation. Although selective neutralization of ghrelin has not yielded consistent results in rodent models, the interplay between ghrelin and LEAP2— a hormone that attaches to the same brain receptors — could be an area of interest for future obesity treatments.

Could ghrelin be the key to tackling obesity? Blocking ghrelin pharmacologically might be a strategy to keep weight off after weight loss, and it could help prevent the typical rebound effect seen with diets and withdrawal of medications. Considering the high rates of weight regain after diet-induced weight loss and withdrawal of weight loss medications, targeting ghrelin might be the missing link in long-term obesity treatment. It could be a valuable approach to improving long-term outcomes for obesity. However, these blockers might have significant side effects, given that ghrelin affects not only hunger but also the brain’s reward and pleasure centers. Therefore, caution will be needed in developing such medications owing to their potential impact on mood and mental health.

With ghrelin playing roles in hunger, reward pathways, and energy regulation, understanding this hormone is crucial in the fight against obesity. Stay tuned for future research that could shed light on the underlying mechanisms at play and hopefully results in clinical action steps.

Dimpi Desai, MD, is a professor in the Department of Medicine, Division of Endocrinology, Gerontology, and Metabolism, Stanford University, Stanford, California, and has disclosed no relevant financial relationships. Ashni Dharia, MD, is a resident in the Department of Internal Medicine, Allegheny General Hospital, Pittsburgh, Pennsylvania.

A version of this article appeared on Medscape.com.

Despite their best efforts, 80% of people who lose weight regain it and many end up heavier within 5 years. Why? Our bodies fight back, revving up hunger while slowing metabolism after weight loss. In ongoing obesity discussions, ghrelin is in the spotlight as the “hunger hormone” playing a crucial role in driving appetite and facilitating weight gain. 

Weight loss interventions, such as diet or gastric bypass surgery, may trigger an increase in ghrelin levels, potentially fueling long-term weight gain. Consequently, ghrelin remains a focal point of research into innovative antiobesity treatments. 

Ghrelin, a hormone produced in the stomach, is often called the “hunger hormone.” Ghrelin is a circulating orexigenic gut hormone with growth hormone–releasing activity. In the intricate balance of energy, central and peripheral peptides such as ghrelin, leptin, adiponectin, and insulin play crucial roles. They regulate hunger, fullness, and metabolic rates, shaping our body weight outcomes. 

Since the discovery of ghrelin, in 1999, research in mice and people has focused on its effect on regulating appetite and implications for long-term weight control. When hunger strikes, ghrelin levels surge, sending signals to the brain that ramp up the appetite. Following a meal, ghrelin decreases, indicating fullness. 

Studies have found that people who were injected with subcutaneous ghrelin experienced a 46% increase in hunger and ate 28% more at their next meal than those who didn’t receive a ghrelin injection.

We might expect high levels of ghrelin in individuals with obesity, but this is not the case. In fact, ghrelin levels are typically lower in individuals with obesity than in leaner individuals. This finding might seem to contradict the idea that obesity is due to high levels of the hunger hormone. 

Excess weight could increase sensitivity to ghrelin, where more receptors lead to higher hunger stimulation with less ghrelin. Beyond hunger, ghrelin can also lead us to eat for comfort, as when stressed or anxious. Ghrelin and synthetic ghrelin mimetics increase body weight and fat mass by activating receptors in the arcuate nucleus of the hypothalamus (Müller et al.; Bany Bakar et al.). There, it also activates the brain’s reward pathways, making us crave food even when we are not hungry. This connection between ghrelin and emotional eating can contribute to stress-induced obesity. 

In my clinical practice, I have seen individuals gain maximum weight when they are under more stress and are sleep-deprived. This is because ghrelin levels increased in these scenarios. This elevation of ghrelin in high-stress, low-sleep situations affects weight gain in women during the postpartum period and menopause. 

Evidence also suggests that certain foods affect ghrelin levels. After a person eats carbohydrates, their ghrelin levels initially decrease quickly, but this is followed by a rise in ghrelin, leading them to become hungry again. In contrast, protein intake helps suppress ghrelin levels for longer. Hence, we advise patients to increase protein intake while reducing their carb intake, or to always eat protein along with carbs.

It makes sense that when individuals with obesity lose weight by fasting or caloric restriction and try to maintain that weight loss, their bodies tend to produce more ghrelin. This effect might explain why people who lose weight often find it hard to keep it off: Rising ghrelin levels after weight loss might drive them to eat more and regain weight. 

Two prominent weight loss surgeries, sleeve gastrectomy (SG) and Roux-en-Y gastric bypass (RYGB), have opposite effects on ghrelin levels, reflecting their distinct mechanisms for weight loss. SG involves removal of the gastric fundus, where ghrelin is produced, resulting in a significant decrease in ghrelin levels; RYGB operates through malabsorption without directly affecting ghrelin production. Despite these differing approaches, both techniques demonstrate remarkable weight loss efficacy. Research comparing the two procedures reveals that SG leads to decreased fasting plasma ghrelin levels, whereas RYGB prompts an increase, highlighting the additional appetite-reducing mechanism of SG through ghrelin suppression. This contrast underscores the intricate role of ghrelin in appetite regulation and suggests that its manipulation can significantly influence weight loss outcomes.

With the effect of ghrelin in stimulating appetite being established, other studies have explored the relationship between ghrelin and insulin resistance. A meta-analysis by researchers at Qingdao University, Qingdao, China, found that circulating ghrelin levels were negatively correlated with insulin resistance in individuals with obesity and normal fasting glucose levels. The findings suggest that the role of ghrelin in obesity might extend beyond appetite regulation to influence metabolic pathways and that ghrelin may be a marker for predicting obesity.

Researchers are exploring potential therapeutic targets focusing on ghrelin modulation. Although selective neutralization of ghrelin has not yielded consistent results in rodent models, the interplay between ghrelin and LEAP2— a hormone that attaches to the same brain receptors — could be an area of interest for future obesity treatments.

Could ghrelin be the key to tackling obesity? Blocking ghrelin pharmacologically might be a strategy to keep weight off after weight loss, and it could help prevent the typical rebound effect seen with diets and withdrawal of medications. Considering the high rates of weight regain after diet-induced weight loss and withdrawal of weight loss medications, targeting ghrelin might be the missing link in long-term obesity treatment. It could be a valuable approach to improving long-term outcomes for obesity. However, these blockers might have significant side effects, given that ghrelin affects not only hunger but also the brain’s reward and pleasure centers. Therefore, caution will be needed in developing such medications owing to their potential impact on mood and mental health.

With ghrelin playing roles in hunger, reward pathways, and energy regulation, understanding this hormone is crucial in the fight against obesity. Stay tuned for future research that could shed light on the underlying mechanisms at play and hopefully results in clinical action steps.

Dimpi Desai, MD, is a professor in the Department of Medicine, Division of Endocrinology, Gerontology, and Metabolism, Stanford University, Stanford, California, and has disclosed no relevant financial relationships. Ashni Dharia, MD, is a resident in the Department of Internal Medicine, Allegheny General Hospital, Pittsburgh, Pennsylvania.

A version of this article appeared on Medscape.com.

Despite their best efforts, 80% of people who lose weight regain it and many end up heavier within 5 years. Why? Our bodies fight back, revving up hunger while slowing metabolism after weight loss. In ongoing obesity discussions, ghrelin is in the spotlight as the “hunger hormone” playing a crucial role in driving appetite and facilitating weight gain. 

Weight loss interventions, such as diet or gastric bypass surgery, may trigger an increase in ghrelin levels, potentially fueling long-term weight gain. Consequently, ghrelin remains a focal point of research into innovative antiobesity treatments. 

Ghrelin, a hormone produced in the stomach, is often called the “hunger hormone.” Ghrelin is a circulating orexigenic gut hormone with growth hormone–releasing activity. In the intricate balance of energy, central and peripheral peptides such as ghrelin, leptin, adiponectin, and insulin play crucial roles. They regulate hunger, fullness, and metabolic rates, shaping our body weight outcomes. 

Since the discovery of ghrelin, in 1999, research in mice and people has focused on its effect on regulating appetite and implications for long-term weight control. When hunger strikes, ghrelin levels surge, sending signals to the brain that ramp up the appetite. Following a meal, ghrelin decreases, indicating fullness. 

Studies have found that people who were injected with subcutaneous ghrelin experienced a 46% increase in hunger and ate 28% more at their next meal than those who didn’t receive a ghrelin injection.

We might expect high levels of ghrelin in individuals with obesity, but this is not the case. In fact, ghrelin levels are typically lower in individuals with obesity than in leaner individuals. This finding might seem to contradict the idea that obesity is due to high levels of the hunger hormone. 

Excess weight could increase sensitivity to ghrelin, where more receptors lead to higher hunger stimulation with less ghrelin. Beyond hunger, ghrelin can also lead us to eat for comfort, as when stressed or anxious. Ghrelin and synthetic ghrelin mimetics increase body weight and fat mass by activating receptors in the arcuate nucleus of the hypothalamus (Müller et al.; Bany Bakar et al.). There, it also activates the brain’s reward pathways, making us crave food even when we are not hungry. This connection between ghrelin and emotional eating can contribute to stress-induced obesity. 

In my clinical practice, I have seen individuals gain maximum weight when they are under more stress and are sleep-deprived. This is because ghrelin levels increased in these scenarios. This elevation of ghrelin in high-stress, low-sleep situations affects weight gain in women during the postpartum period and menopause. 

Evidence also suggests that certain foods affect ghrelin levels. After a person eats carbohydrates, their ghrelin levels initially decrease quickly, but this is followed by a rise in ghrelin, leading them to become hungry again. In contrast, protein intake helps suppress ghrelin levels for longer. Hence, we advise patients to increase protein intake while reducing their carb intake, or to always eat protein along with carbs.

It makes sense that when individuals with obesity lose weight by fasting or caloric restriction and try to maintain that weight loss, their bodies tend to produce more ghrelin. This effect might explain why people who lose weight often find it hard to keep it off: Rising ghrelin levels after weight loss might drive them to eat more and regain weight. 

Two prominent weight loss surgeries, sleeve gastrectomy (SG) and Roux-en-Y gastric bypass (RYGB), have opposite effects on ghrelin levels, reflecting their distinct mechanisms for weight loss. SG involves removal of the gastric fundus, where ghrelin is produced, resulting in a significant decrease in ghrelin levels; RYGB operates through malabsorption without directly affecting ghrelin production. Despite these differing approaches, both techniques demonstrate remarkable weight loss efficacy. Research comparing the two procedures reveals that SG leads to decreased fasting plasma ghrelin levels, whereas RYGB prompts an increase, highlighting the additional appetite-reducing mechanism of SG through ghrelin suppression. This contrast underscores the intricate role of ghrelin in appetite regulation and suggests that its manipulation can significantly influence weight loss outcomes.

With the effect of ghrelin in stimulating appetite being established, other studies have explored the relationship between ghrelin and insulin resistance. A meta-analysis by researchers at Qingdao University, Qingdao, China, found that circulating ghrelin levels were negatively correlated with insulin resistance in individuals with obesity and normal fasting glucose levels. The findings suggest that the role of ghrelin in obesity might extend beyond appetite regulation to influence metabolic pathways and that ghrelin may be a marker for predicting obesity.

Researchers are exploring potential therapeutic targets focusing on ghrelin modulation. Although selective neutralization of ghrelin has not yielded consistent results in rodent models, the interplay between ghrelin and LEAP2— a hormone that attaches to the same brain receptors — could be an area of interest for future obesity treatments.

Could ghrelin be the key to tackling obesity? Blocking ghrelin pharmacologically might be a strategy to keep weight off after weight loss, and it could help prevent the typical rebound effect seen with diets and withdrawal of medications. Considering the high rates of weight regain after diet-induced weight loss and withdrawal of weight loss medications, targeting ghrelin might be the missing link in long-term obesity treatment. It could be a valuable approach to improving long-term outcomes for obesity. However, these blockers might have significant side effects, given that ghrelin affects not only hunger but also the brain’s reward and pleasure centers. Therefore, caution will be needed in developing such medications owing to their potential impact on mood and mental health.

With ghrelin playing roles in hunger, reward pathways, and energy regulation, understanding this hormone is crucial in the fight against obesity. Stay tuned for future research that could shed light on the underlying mechanisms at play and hopefully results in clinical action steps.

Dimpi Desai, MD, is a professor in the Department of Medicine, Division of Endocrinology, Gerontology, and Metabolism, Stanford University, Stanford, California, and has disclosed no relevant financial relationships. Ashni Dharia, MD, is a resident in the Department of Internal Medicine, Allegheny General Hospital, Pittsburgh, Pennsylvania.

A version of this article appeared on Medscape.com.

ORLANDO, FLA. — The diabetes and weight loss drug tirzepatide (Mounjaro for type 2 diabetes; Zepbound for obesity) was so effective at reducing sleep disruptions in patients with obesity and obstructive sleep apnea (OSA) that 40%-50% no longer needed to use a continuous positive airway pressure (CPAP) device, according to two new studies.

Tirzepatide, a long-acting glucose-dependent insulinotropic polypeptide (GIP) receptor agonist and glucagon-like peptide 1 (GLP-1) receptor agonist, also lowered C-reactive protein levels and systolic blood pressure. And patients taking the medication lost 18%-20% of their body weight. 

The SURMOUNT-OSA studies “mark a significant milestone in the treatment of OSA, offering a promising new therapeutic option that addresses both respiratory and metabolic complications,” said lead author Atul Malhotra, MD, professor of medicine at the University of California, San Diego, and director of sleep medicine at UC San Diego Health. 

The two double-blind, randomized, controlled trials in patients with obesity and moderate to severe OSA were conducted at 60 sites in nine countries. The results were presented at the American Diabetes Association (ADA) 84th Scientific Sessions and simultaneously published online in the New England Journal of Medicine.

OSA affects 1 billion people worldwide and 30 million American adults, many of whom are undiagnosed. Obesity is a common risk factor. According to the ADA, 40% of those with obesity have OSA and 70% of those with OSA have obesity. 

CPAP is an effective and the most-used intervention for OSA, but many patients refuse to use the device, stop using it, or cannot use it. Should tirzepatide eventually gain Food and Drug Administration approval for OSA, it would be the first drug approved for the condition.

“This new drug treatment offers a more accessible alternative for individuals who cannot tolerate or adhere to existing therapies,” said Dr. Malhotra.
 

Huge Reduction in Episodes, Severity

For the two studies, patients were enrolled who had moderate to severe OSA, defined as more than 15 events per hour (using the apnea-hypopnea index [AHI]) and a body mass index of 30 kg/m² or greater. Those not using a CPAP device were enrolled in study 1, and those using a CPAP device were enrolled in study 2. 

Participants received either the maximum tolerated dose of tirzepatide (10 or 15 mg by once-weekly injection) or placebo for 1 year. In study 1, 114 individuals received tirzepatide and 120 received placebo. For study 2, 119 patients received tirzepatide and 114 received placebo. All participants received regular lifestyle counseling sessions about nutrition and were instructed to reduce food intake by 500 kcal/day and to engage in at least 150 min/week of physical activity.

Enrollment was limited to 70% men to ensure adequate representation of women.

At baseline, 65%-70% of participants had severe OSA, with more than 30 events/hour on the AHI scale and a mean of 51.5 events/hour.

By 1 year, patients taking tirzepatide had 27-30 fewer events/hour, compared with 4-6 fewer events/hour for those taking placebo.

Up to half of those who received tirzepatide in both trials had less than 5 events/hour or 5-14 AHI events/hour and an Epworth Sleepiness Scale score of 10 or less. Those thresholds “represent a level at which CPAP therapy may not be recommended,” wrote the authors.

Patients in the tirzepatide group also had a decrease in systolic blood pressure from baseline of 9.7 mm Hg in study 1 and 7.6 mm Hg in study 2 at week 48.

The most common adverse events were diarrhea, nausea, and vomiting, which occurred in approximately a quarter of patients taking tirzepatide. There were two adjudicated-confirmed cases of acute pancreatitis in those taking tirzepatide in study 2. 

Patients who received tirzepatide also reported fewer daytime and nighttime disturbances, as measured using the Patient-Reported Outcomes Measurement Information System Short Form scale for Sleep-Related Impairment and Sleep Disturbance.
 

Tirzepatide Plus CPAP Are Best

Writing in an accompanying editorial, Sanjay R. Patel, MD, noted that, although clinical guidelines have recommended that weight loss strategies be incorporated as part of OSA treatment, “the integration of obesity management into the approaches to care for obstructive sleep apnea has lagged.”

As many as half of patients abandon CPAP therapy within 3 years, wrote Dr. Patel, who is professor of medicine and epidemiology at the University of Pittsburgh, Pittsburgh, Pennsylvania, and medical director of the UPMC Comprehensive Sleep Disorders program. “An effective medication to treat obesity is thus an obvious avenue to pursue.”

Dr. Patel noted the large reductions in the number of events on the AHI scale. He wrote that the improvement in systolic blood pressure “was substantially larger than effects seen with CPAP therapy alone and indicate that tirzepatide may be an attractive option for those patients who seek to reduce their cardiovascular risk.”

Dr. Patel raised concerns about whether patients outside of a trial would stick with therapy, noting studies have shown high rates of discontinuation of GLP-1 receptor agonists.

And, he wrote, “racial disparities in the use of GLP-1 receptor agonists among patients with diabetes arouse concern that the addition of tirzepatide as a treatment option for obstructive sleep apnea without directly addressing policies relative to coverage of care will only further exacerbate already pervasive disparities in clinical care for obstructive sleep apnea.”

Commenting on the study during the presentation of the results, Louis Aronne, MD, said he believes the trials demonstrate “the treatment of obesity with tirzepatide plus CPAP is really the optimal treatment for obstructive sleep apnea and obesity-related cardiometabolic risks.” Dr. Aronne is the Sanford I. Weill professor of metabolic research at Weill Cornell Medical College, New York City.

Dr. Aronne added there is still much to learn. It is still not clear whether tirzepatide had an independent effect in the OSA trial — as has been seen in other studies where the drug clearly reduced cardiovascular risk — or whether the positive results were primarily caused by weight loss.

“I believe that over time we’ll see that this particular effect in sleep apnea is related to weight,” he said. 

The study was supported by Eli Lilly. Dr. Malhotra has reported being a paid consultant for Lilly and ZOLL Medical and a cofounder of Healcisio. 

A version of this article appeared on Medscape.com.
 

ORLANDO, FLA. — The diabetes and weight loss drug tirzepatide (Mounjaro for type 2 diabetes; Zepbound for obesity) was so effective at reducing sleep disruptions in patients with obesity and obstructive sleep apnea (OSA) that 40%-50% no longer needed to use a continuous positive airway pressure (CPAP) device, according to two new studies.

Tirzepatide, a long-acting glucose-dependent insulinotropic polypeptide (GIP) receptor agonist and glucagon-like peptide 1 (GLP-1) receptor agonist, also lowered C-reactive protein levels and systolic blood pressure. And patients taking the medication lost 18%-20% of their body weight. 

The SURMOUNT-OSA studies “mark a significant milestone in the treatment of OSA, offering a promising new therapeutic option that addresses both respiratory and metabolic complications,” said lead author Atul Malhotra, MD, professor of medicine at the University of California, San Diego, and director of sleep medicine at UC San Diego Health. 

The two double-blind, randomized, controlled trials in patients with obesity and moderate to severe OSA were conducted at 60 sites in nine countries. The results were presented at the American Diabetes Association (ADA) 84th Scientific Sessions and simultaneously published online in the New England Journal of Medicine.

OSA affects 1 billion people worldwide and 30 million American adults, many of whom are undiagnosed. Obesity is a common risk factor. According to the ADA, 40% of those with obesity have OSA and 70% of those with OSA have obesity. 

CPAP is an effective and the most-used intervention for OSA, but many patients refuse to use the device, stop using it, or cannot use it. Should tirzepatide eventually gain Food and Drug Administration approval for OSA, it would be the first drug approved for the condition.

“This new drug treatment offers a more accessible alternative for individuals who cannot tolerate or adhere to existing therapies,” said Dr. Malhotra.
 

Huge Reduction in Episodes, Severity

For the two studies, patients were enrolled who had moderate to severe OSA, defined as more than 15 events per hour (using the apnea-hypopnea index [AHI]) and a body mass index of 30 kg/m² or greater. Those not using a CPAP device were enrolled in study 1, and those using a CPAP device were enrolled in study 2. 

Participants received either the maximum tolerated dose of tirzepatide (10 or 15 mg by once-weekly injection) or placebo for 1 year. In study 1, 114 individuals received tirzepatide and 120 received placebo. For study 2, 119 patients received tirzepatide and 114 received placebo. All participants received regular lifestyle counseling sessions about nutrition and were instructed to reduce food intake by 500 kcal/day and to engage in at least 150 min/week of physical activity.

Enrollment was limited to 70% men to ensure adequate representation of women.

At baseline, 65%-70% of participants had severe OSA, with more than 30 events/hour on the AHI scale and a mean of 51.5 events/hour.

By 1 year, patients taking tirzepatide had 27-30 fewer events/hour, compared with 4-6 fewer events/hour for those taking placebo.

Up to half of those who received tirzepatide in both trials had less than 5 events/hour or 5-14 AHI events/hour and an Epworth Sleepiness Scale score of 10 or less. Those thresholds “represent a level at which CPAP therapy may not be recommended,” wrote the authors.

Patients in the tirzepatide group also had a decrease in systolic blood pressure from baseline of 9.7 mm Hg in study 1 and 7.6 mm Hg in study 2 at week 48.

The most common adverse events were diarrhea, nausea, and vomiting, which occurred in approximately a quarter of patients taking tirzepatide. There were two adjudicated-confirmed cases of acute pancreatitis in those taking tirzepatide in study 2. 

Patients who received tirzepatide also reported fewer daytime and nighttime disturbances, as measured using the Patient-Reported Outcomes Measurement Information System Short Form scale for Sleep-Related Impairment and Sleep Disturbance.
 

Tirzepatide Plus CPAP Are Best

Writing in an accompanying editorial, Sanjay R. Patel, MD, noted that, although clinical guidelines have recommended that weight loss strategies be incorporated as part of OSA treatment, “the integration of obesity management into the approaches to care for obstructive sleep apnea has lagged.”

As many as half of patients abandon CPAP therapy within 3 years, wrote Dr. Patel, who is professor of medicine and epidemiology at the University of Pittsburgh, Pittsburgh, Pennsylvania, and medical director of the UPMC Comprehensive Sleep Disorders program. “An effective medication to treat obesity is thus an obvious avenue to pursue.”

Dr. Patel noted the large reductions in the number of events on the AHI scale. He wrote that the improvement in systolic blood pressure “was substantially larger than effects seen with CPAP therapy alone and indicate that tirzepatide may be an attractive option for those patients who seek to reduce their cardiovascular risk.”

Dr. Patel raised concerns about whether patients outside of a trial would stick with therapy, noting studies have shown high rates of discontinuation of GLP-1 receptor agonists.

And, he wrote, “racial disparities in the use of GLP-1 receptor agonists among patients with diabetes arouse concern that the addition of tirzepatide as a treatment option for obstructive sleep apnea without directly addressing policies relative to coverage of care will only further exacerbate already pervasive disparities in clinical care for obstructive sleep apnea.”

Commenting on the study during the presentation of the results, Louis Aronne, MD, said he believes the trials demonstrate “the treatment of obesity with tirzepatide plus CPAP is really the optimal treatment for obstructive sleep apnea and obesity-related cardiometabolic risks.” Dr. Aronne is the Sanford I. Weill professor of metabolic research at Weill Cornell Medical College, New York City.

Dr. Aronne added there is still much to learn. It is still not clear whether tirzepatide had an independent effect in the OSA trial — as has been seen in other studies where the drug clearly reduced cardiovascular risk — or whether the positive results were primarily caused by weight loss.

“I believe that over time we’ll see that this particular effect in sleep apnea is related to weight,” he said. 

The study was supported by Eli Lilly. Dr. Malhotra has reported being a paid consultant for Lilly and ZOLL Medical and a cofounder of Healcisio. 

A version of this article appeared on Medscape.com.
 

ORLANDO, FLA. — The diabetes and weight loss drug tirzepatide (Mounjaro for type 2 diabetes; Zepbound for obesity) was so effective at reducing sleep disruptions in patients with obesity and obstructive sleep apnea (OSA) that 40%-50% no longer needed to use a continuous positive airway pressure (CPAP) device, according to two new studies.

Tirzepatide, a long-acting glucose-dependent insulinotropic polypeptide (GIP) receptor agonist and glucagon-like peptide 1 (GLP-1) receptor agonist, also lowered C-reactive protein levels and systolic blood pressure. And patients taking the medication lost 18%-20% of their body weight. 

The SURMOUNT-OSA studies “mark a significant milestone in the treatment of OSA, offering a promising new therapeutic option that addresses both respiratory and metabolic complications,” said lead author Atul Malhotra, MD, professor of medicine at the University of California, San Diego, and director of sleep medicine at UC San Diego Health. 

The two double-blind, randomized, controlled trials in patients with obesity and moderate to severe OSA were conducted at 60 sites in nine countries. The results were presented at the American Diabetes Association (ADA) 84th Scientific Sessions and simultaneously published online in the New England Journal of Medicine.

OSA affects 1 billion people worldwide and 30 million American adults, many of whom are undiagnosed. Obesity is a common risk factor. According to the ADA, 40% of those with obesity have OSA and 70% of those with OSA have obesity. 

CPAP is an effective and the most-used intervention for OSA, but many patients refuse to use the device, stop using it, or cannot use it. Should tirzepatide eventually gain Food and Drug Administration approval for OSA, it would be the first drug approved for the condition.

“This new drug treatment offers a more accessible alternative for individuals who cannot tolerate or adhere to existing therapies,” said Dr. Malhotra.
 

Huge Reduction in Episodes, Severity

For the two studies, patients were enrolled who had moderate to severe OSA, defined as more than 15 events per hour (using the apnea-hypopnea index [AHI]) and a body mass index of 30 kg/m² or greater. Those not using a CPAP device were enrolled in study 1, and those using a CPAP device were enrolled in study 2. 

Participants received either the maximum tolerated dose of tirzepatide (10 or 15 mg by once-weekly injection) or placebo for 1 year. In study 1, 114 individuals received tirzepatide and 120 received placebo. For study 2, 119 patients received tirzepatide and 114 received placebo. All participants received regular lifestyle counseling sessions about nutrition and were instructed to reduce food intake by 500 kcal/day and to engage in at least 150 min/week of physical activity.

Enrollment was limited to 70% men to ensure adequate representation of women.

At baseline, 65%-70% of participants had severe OSA, with more than 30 events/hour on the AHI scale and a mean of 51.5 events/hour.

By 1 year, patients taking tirzepatide had 27-30 fewer events/hour, compared with 4-6 fewer events/hour for those taking placebo.

Up to half of those who received tirzepatide in both trials had less than 5 events/hour or 5-14 AHI events/hour and an Epworth Sleepiness Scale score of 10 or less. Those thresholds “represent a level at which CPAP therapy may not be recommended,” wrote the authors.

Patients in the tirzepatide group also had a decrease in systolic blood pressure from baseline of 9.7 mm Hg in study 1 and 7.6 mm Hg in study 2 at week 48.

The most common adverse events were diarrhea, nausea, and vomiting, which occurred in approximately a quarter of patients taking tirzepatide. There were two adjudicated-confirmed cases of acute pancreatitis in those taking tirzepatide in study 2. 

Patients who received tirzepatide also reported fewer daytime and nighttime disturbances, as measured using the Patient-Reported Outcomes Measurement Information System Short Form scale for Sleep-Related Impairment and Sleep Disturbance.
 

Tirzepatide Plus CPAP Are Best

Writing in an accompanying editorial, Sanjay R. Patel, MD, noted that, although clinical guidelines have recommended that weight loss strategies be incorporated as part of OSA treatment, “the integration of obesity management into the approaches to care for obstructive sleep apnea has lagged.”

As many as half of patients abandon CPAP therapy within 3 years, wrote Dr. Patel, who is professor of medicine and epidemiology at the University of Pittsburgh, Pittsburgh, Pennsylvania, and medical director of the UPMC Comprehensive Sleep Disorders program. “An effective medication to treat obesity is thus an obvious avenue to pursue.”

Dr. Patel noted the large reductions in the number of events on the AHI scale. He wrote that the improvement in systolic blood pressure “was substantially larger than effects seen with CPAP therapy alone and indicate that tirzepatide may be an attractive option for those patients who seek to reduce their cardiovascular risk.”

Dr. Patel raised concerns about whether patients outside of a trial would stick with therapy, noting studies have shown high rates of discontinuation of GLP-1 receptor agonists.

And, he wrote, “racial disparities in the use of GLP-1 receptor agonists among patients with diabetes arouse concern that the addition of tirzepatide as a treatment option for obstructive sleep apnea without directly addressing policies relative to coverage of care will only further exacerbate already pervasive disparities in clinical care for obstructive sleep apnea.”

Commenting on the study during the presentation of the results, Louis Aronne, MD, said he believes the trials demonstrate “the treatment of obesity with tirzepatide plus CPAP is really the optimal treatment for obstructive sleep apnea and obesity-related cardiometabolic risks.” Dr. Aronne is the Sanford I. Weill professor of metabolic research at Weill Cornell Medical College, New York City.

Dr. Aronne added there is still much to learn. It is still not clear whether tirzepatide had an independent effect in the OSA trial — as has been seen in other studies where the drug clearly reduced cardiovascular risk — or whether the positive results were primarily caused by weight loss.

“I believe that over time we’ll see that this particular effect in sleep apnea is related to weight,” he said. 

The study was supported by Eli Lilly. Dr. Malhotra has reported being a paid consultant for Lilly and ZOLL Medical and a cofounder of Healcisio. 

A version of this article appeared on Medscape.com.
 

TOPLINE:

Individuals on an intermittent-fasting and protein-pacing (IF-P) diet had fewer gastrointestinal symptoms and increased diversity in gut microbiota than those on a calorie-restricted (CR) Mediterranean-style diet in a small, randomized trial.

METHODOLOGY:

• Researchers compared the effects on gastrointestinal symptoms, the gut microbiome, and circulating cytokines and metabolites of two low-calorie, 8-week dietary interventions: A Mediterranean-style continuous CR diet based on US dietary recommendations and an IF-P diet. The interventions were matched for energy intake.
• Participants included men and women with overweight/obesity who were randomly assigned to one of the two groups: CR diet (n = 20) and IF-P diet (n = 21).
• Researchers used samples and data from an ongoing randomized controlled trial (https://clinicaltrials.gov/study/NCT04327141) comparing the effects of the CR diet vs the IF-P diet on anthropometric and cardiometabolic outcomes.
• In a subanalysis for the current study, researchers compared outcomes in “high” and “low” responders to the IF-P regimen, based on relative weight loss.

TAKEAWAY:

• The IF-P diet resulted in more substantial reductions in patient-reported symptoms of gastrointestinal problems and more pronounced increases in gut microbiota diversity and in the abundance of microbial families and genera associated with favorable metabolic profiles, such as Christensenellaceae, Rikenellaceae, and Marvinbryantia, than the CR diet.
• The IF-P diet significantly increased cytokines linked to lipolysis, weight loss, inflammation, and the immune response.
• With the CR diet, metabolites associated with a longevity-related metabolic pathway increased.
• The subgroup analysis of high and low responders to the IF-P diet showed an increased abundance of certain bacteria associated with metabolic benefits and anti-inflammatory effects among high responders, whereas low responders showed an increased abundance of butyrate-producing and nutritionally adaptive species such as Eubacterium ventriosum and Roseburia inulinivorans.
• A fecal metabolome analysis revealed that high responders showed enrichment of fecal metabolites involved in lipid metabolism, whereas more prominent pathways in low responders were related to the metabolism of amino acids and peptides, as well as tyrosine metabolism and arginine biosynthesis.

IN PRACTICE:

“These findings shed light on the differential effects of IF regimens, including IF-P, as a promising dietary intervention for obesity management and microbiotic and metabolic health.”

SOURCE:

The study, with corresponding author Paul J. Arciero, PhD, of the Human Nutrition and Metabolism Laboratory at Skidmore College, Saratoga Springs, New York, was published online in Nature Communications.

LIMITATIONS:

The reliance on fecal samples to represent the gut microbiome may have overlooked potential microbial populations in the upper gastrointestinal tract. Other limitations include the short, 8-week duration of the trial and small number of patients.

DISCLOSURES:

The study was primarily funded by an unrestricted grant from Isagenix International LLC to Arciero, with secondary funding provided to a coauthor. Dr. Arciero is a consultant for Isagenix International LLC, is an advisory board member of the International Protein Board, and received financial compensation for books and keynote presentations on protein pacing. One coauthor is employed by the funder.
 

A version of this article appeared on Medscape.com.

TOPLINE:

Individuals on an intermittent-fasting and protein-pacing (IF-P) diet had fewer gastrointestinal symptoms and increased diversity in gut microbiota than those on a calorie-restricted (CR) Mediterranean-style diet in a small, randomized trial.

METHODOLOGY:

• Researchers compared the effects on gastrointestinal symptoms, the gut microbiome, and circulating cytokines and metabolites of two low-calorie, 8-week dietary interventions: A Mediterranean-style continuous CR diet based on US dietary recommendations and an IF-P diet. The interventions were matched for energy intake.
• Participants included men and women with overweight/obesity who were randomly assigned to one of the two groups: CR diet (n = 20) and IF-P diet (n = 21).
• Researchers used samples and data from an ongoing randomized controlled trial (https://clinicaltrials.gov/study/NCT04327141) comparing the effects of the CR diet vs the IF-P diet on anthropometric and cardiometabolic outcomes.
• In a subanalysis for the current study, researchers compared outcomes in “high” and “low” responders to the IF-P regimen, based on relative weight loss.

TAKEAWAY:

• The IF-P diet resulted in more substantial reductions in patient-reported symptoms of gastrointestinal problems and more pronounced increases in gut microbiota diversity and in the abundance of microbial families and genera associated with favorable metabolic profiles, such as Christensenellaceae, Rikenellaceae, and Marvinbryantia, than the CR diet.
• The IF-P diet significantly increased cytokines linked to lipolysis, weight loss, inflammation, and the immune response.
• With the CR diet, metabolites associated with a longevity-related metabolic pathway increased.
• The subgroup analysis of high and low responders to the IF-P diet showed an increased abundance of certain bacteria associated with metabolic benefits and anti-inflammatory effects among high responders, whereas low responders showed an increased abundance of butyrate-producing and nutritionally adaptive species such as Eubacterium ventriosum and Roseburia inulinivorans.
• A fecal metabolome analysis revealed that high responders showed enrichment of fecal metabolites involved in lipid metabolism, whereas more prominent pathways in low responders were related to the metabolism of amino acids and peptides, as well as tyrosine metabolism and arginine biosynthesis.

IN PRACTICE:

“These findings shed light on the differential effects of IF regimens, including IF-P, as a promising dietary intervention for obesity management and microbiotic and metabolic health.”

SOURCE:

The study, with corresponding author Paul J. Arciero, PhD, of the Human Nutrition and Metabolism Laboratory at Skidmore College, Saratoga Springs, New York, was published online in Nature Communications.

LIMITATIONS:

The reliance on fecal samples to represent the gut microbiome may have overlooked potential microbial populations in the upper gastrointestinal tract. Other limitations include the short, 8-week duration of the trial and small number of patients.

DISCLOSURES:

The study was primarily funded by an unrestricted grant from Isagenix International LLC to Arciero, with secondary funding provided to a coauthor. Dr. Arciero is a consultant for Isagenix International LLC, is an advisory board member of the International Protein Board, and received financial compensation for books and keynote presentations on protein pacing. One coauthor is employed by the funder.
 

A version of this article appeared on Medscape.com.

TOPLINE:

Individuals on an intermittent-fasting and protein-pacing (IF-P) diet had fewer gastrointestinal symptoms and increased diversity in gut microbiota than those on a calorie-restricted (CR) Mediterranean-style diet in a small, randomized trial.

METHODOLOGY:

• Researchers compared the effects on gastrointestinal symptoms, the gut microbiome, and circulating cytokines and metabolites of two low-calorie, 8-week dietary interventions: A Mediterranean-style continuous CR diet based on US dietary recommendations and an IF-P diet. The interventions were matched for energy intake.
• Participants included men and women with overweight/obesity who were randomly assigned to one of the two groups: CR diet (n = 20) and IF-P diet (n = 21).
• Researchers used samples and data from an ongoing randomized controlled trial (https://clinicaltrials.gov/study/NCT04327141) comparing the effects of the CR diet vs the IF-P diet on anthropometric and cardiometabolic outcomes.
• In a subanalysis for the current study, researchers compared outcomes in “high” and “low” responders to the IF-P regimen, based on relative weight loss.

TAKEAWAY:

• The IF-P diet resulted in more substantial reductions in patient-reported symptoms of gastrointestinal problems and more pronounced increases in gut microbiota diversity and in the abundance of microbial families and genera associated with favorable metabolic profiles, such as Christensenellaceae, Rikenellaceae, and Marvinbryantia, than the CR diet.
• The IF-P diet significantly increased cytokines linked to lipolysis, weight loss, inflammation, and the immune response.
• With the CR diet, metabolites associated with a longevity-related metabolic pathway increased.
• The subgroup analysis of high and low responders to the IF-P diet showed an increased abundance of certain bacteria associated with metabolic benefits and anti-inflammatory effects among high responders, whereas low responders showed an increased abundance of butyrate-producing and nutritionally adaptive species such as Eubacterium ventriosum and Roseburia inulinivorans.
• A fecal metabolome analysis revealed that high responders showed enrichment of fecal metabolites involved in lipid metabolism, whereas more prominent pathways in low responders were related to the metabolism of amino acids and peptides, as well as tyrosine metabolism and arginine biosynthesis.

IN PRACTICE:

“These findings shed light on the differential effects of IF regimens, including IF-P, as a promising dietary intervention for obesity management and microbiotic and metabolic health.”

SOURCE:

The study, with corresponding author Paul J. Arciero, PhD, of the Human Nutrition and Metabolism Laboratory at Skidmore College, Saratoga Springs, New York, was published online in Nature Communications.

LIMITATIONS:

The reliance on fecal samples to represent the gut microbiome may have overlooked potential microbial populations in the upper gastrointestinal tract. Other limitations include the short, 8-week duration of the trial and small number of patients.

DISCLOSURES:

The study was primarily funded by an unrestricted grant from Isagenix International LLC to Arciero, with secondary funding provided to a coauthor. Dr. Arciero is a consultant for Isagenix International LLC, is an advisory board member of the International Protein Board, and received financial compensation for books and keynote presentations on protein pacing. One coauthor is employed by the funder.
 

A version of this article appeared on Medscape.com.

For decades it’s been thought that preconception use of the oral antidiabetic metformin by mothers and fathers might result in adverse fetal outcomes, including congenital malformations and stillbirths.

Women with type 2 diabetes (T2D) are often advised to switch to insulin before or during early pregnancy out of concern for fetal safety. But two studies from the Harvard T.H. Chan School of Public Health in Boston, Massachusetts — one in mothers, the other in fathers — report that metformin, a common and cost-effective antidiabetic agent, is not associated with a significant increased risk of teratogenicity and negative perinatal outcomes. The studies appear in Annals of Internal Medicine.

The studies may make it easier for physicians to reassure diabetic parents-to-be about the safety of metformin use before conception and in early pregnancy,

In the context of sparse existing safety data, the maternal analysis looked at Medicaid data on 12,489 mothers (mean age, about 30) receiving metformin for pregestational T2D during the period 2000-2018. “Many women become pregnant while still taking noninsulin oral antidiabetics, mostly metformin, and one safety concern is whether metformin could cause birth defects,” lead author Yu-Han Chiu, MD, ScD, an epidemiologist, said in an interview, commenting on the impetus for the study.

Metformin in Fathers

Turning to fathers, a much larger cohort study by Harvard T.H. Chan investigators looked at the effect of paternal metformin use and also found it to be safe.

The Harvard investigators analyzed diabetic men in 383,851 live births from 1999 to 2020 in an Israeli health fund cohort, excluding those with diabetic spouses. Across different T2D medication groups, paternal age ranged from about 35 to about 43 years. The data revealed that paternal use of metformin monotherapy in the preconception sperm production period was, after adjustment of crude numbers, not associated with major congenital malformations (MCMs) in newborns.

“While metformin has an overall good safety profile, it can lower androgen levels, and there had been some concerns that its use in fathers could alter the sperm, causing adverse effects to the fetus,” lead author and neuroepidemiologist Ran S. Rotem, MD, ScD, of the Harvard School of Public Health, Boston, Massachusetts, said in interview. “Given the increasing prevalence of diabetes in young individuals, more fathers are conceiving a child while using the medication, which could lead to a substantial population effect even if the individual risk is low. But our study suggests that the medication is safe to use by fathers before conception.”

For decades it’s been thought that preconception use of the oral antidiabetic metformin by mothers and fathers might result in adverse fetal outcomes, including congenital malformations and stillbirths.

Women with type 2 diabetes (T2D) are often advised to switch to insulin before or during early pregnancy out of concern for fetal safety. But two studies from the Harvard T.H. Chan School of Public Health in Boston, Massachusetts — one in mothers, the other in fathers — report that metformin, a common and cost-effective antidiabetic agent, is not associated with a significant increased risk of teratogenicity and negative perinatal outcomes. The studies appear in Annals of Internal Medicine.

The studies may make it easier for physicians to reassure diabetic parents-to-be about the safety of metformin use before conception and in early pregnancy,

In the context of sparse existing safety data, the maternal analysis looked at Medicaid data on 12,489 mothers (mean age, about 30) receiving metformin for pregestational T2D during the period 2000-2018. “Many women become pregnant while still taking noninsulin oral antidiabetics, mostly metformin, and one safety concern is whether metformin could cause birth defects,” lead author Yu-Han Chiu, MD, ScD, an epidemiologist, said in an interview, commenting on the impetus for the study.

Metformin in Fathers

Turning to fathers, a much larger cohort study by Harvard T.H. Chan investigators looked at the effect of paternal metformin use and also found it to be safe.

The Harvard investigators analyzed diabetic men in 383,851 live births from 1999 to 2020 in an Israeli health fund cohort, excluding those with diabetic spouses. Across different T2D medication groups, paternal age ranged from about 35 to about 43 years. The data revealed that paternal use of metformin monotherapy in the preconception sperm production period was, after adjustment of crude numbers, not associated with major congenital malformations (MCMs) in newborns.

“While metformin has an overall good safety profile, it can lower androgen levels, and there had been some concerns that its use in fathers could alter the sperm, causing adverse effects to the fetus,” lead author and neuroepidemiologist Ran S. Rotem, MD, ScD, of the Harvard School of Public Health, Boston, Massachusetts, said in interview. “Given the increasing prevalence of diabetes in young individuals, more fathers are conceiving a child while using the medication, which could lead to a substantial population effect even if the individual risk is low. But our study suggests that the medication is safe to use by fathers before conception.”

For decades it’s been thought that preconception use of the oral antidiabetic metformin by mothers and fathers might result in adverse fetal outcomes, including congenital malformations and stillbirths.

Women with type 2 diabetes (T2D) are often advised to switch to insulin before or during early pregnancy out of concern for fetal safety. But two studies from the Harvard T.H. Chan School of Public Health in Boston, Massachusetts — one in mothers, the other in fathers — report that metformin, a common and cost-effective antidiabetic agent, is not associated with a significant increased risk of teratogenicity and negative perinatal outcomes. The studies appear in Annals of Internal Medicine.

The studies may make it easier for physicians to reassure diabetic parents-to-be about the safety of metformin use before conception and in early pregnancy,

In the context of sparse existing safety data, the maternal analysis looked at Medicaid data on 12,489 mothers (mean age, about 30) receiving metformin for pregestational T2D during the period 2000-2018. “Many women become pregnant while still taking noninsulin oral antidiabetics, mostly metformin, and one safety concern is whether metformin could cause birth defects,” lead author Yu-Han Chiu, MD, ScD, an epidemiologist, said in an interview, commenting on the impetus for the study.

Metformin in Fathers

Turning to fathers, a much larger cohort study by Harvard T.H. Chan investigators looked at the effect of paternal metformin use and also found it to be safe.

The Harvard investigators analyzed diabetic men in 383,851 live births from 1999 to 2020 in an Israeli health fund cohort, excluding those with diabetic spouses. Across different T2D medication groups, paternal age ranged from about 35 to about 43 years. The data revealed that paternal use of metformin monotherapy in the preconception sperm production period was, after adjustment of crude numbers, not associated with major congenital malformations (MCMs) in newborns.

“While metformin has an overall good safety profile, it can lower androgen levels, and there had been some concerns that its use in fathers could alter the sperm, causing adverse effects to the fetus,” lead author and neuroepidemiologist Ran S. Rotem, MD, ScD, of the Harvard School of Public Health, Boston, Massachusetts, said in interview. “Given the increasing prevalence of diabetes in young individuals, more fathers are conceiving a child while using the medication, which could lead to a substantial population effect even if the individual risk is low. But our study suggests that the medication is safe to use by fathers before conception.”

TOPLINE:

Whether they have normal weight, overweight, or obesity, individuals with metabolically healthy (MH) phenotypes show a lower frequency of impaired glucose metabolism than their unhealthy counterparts across all weight categories.

METHODOLOGY:

• The concepts of MH overweight and MH obesity refer to a subset of people who exhibit an absence of cardiometabolic risk factors despite excess body fat, but the prevalence of prediabetes has not been investigated by metabolic phenotype and body mass index (BMI).
• This study first validated the use of estimated glucose disposal rate (eGDR), an index of insulin sensitivity calculated from clinical variables, in 350 individuals without diabetes (mean age, 37 years; 219 women; mean BMI, 30.3) from the EUGENE2 project who had varying glucose tolerance values originally assessed by insulin-stimulated glucose disposal.
• Researchers then stratified 2201 participants without diabetes (mean age, 46 years; White; 1290 women; mean BMI, 31.2) from the CATAMERI study according to BMI into three groups — individuals with normal weight (BMI, 18-24.9), overweight (BMI, 25-29.9), and obesity (BMI, ≥ 30).
• The men and women in each BMI group were separated into quartiles of insulin sensitivity based on eGDR index:
• In the normal weight group, men and women were defined as MH in the top three eGDR quartiles and metabolically unhealthy (MU) in the lowest quartile.
• In the overweight and obesity groups, people were defined as MH in the top eGDR quartile and MU in the lower three quartiles.
• Impaired glucose tolerance (IGT), impaired fasting glucose (IFG), and combined IFG+IGT conditions (from an oral glucose tolerance test) were compared in individuals without diabetes based on MH or unhealthy phenotypes across normal weight, overweight, and obese categories.

TAKEAWAY:

• eGDR demonstrated good accuracy in detecting individuals with higher insulin sensitivity in the EUGENE2 cohort.
• The MH overweight and MH obesity groups showed comparable glycemic parameters as the MH normal weight group, whereas the MU overweight and MU obesity groups exhibited higher A1c levels and fasting and 2-hour post-load glucose than the MH normal weight group.
• The frequencies of IFG, IGT, and IFG+IGT conditions were similar among the MH normal weight, MH overweight, and MH obesity groups but were higher in the MU overweight and MU obesity groups than in the MU normal weight group.
• Furthermore, compared with those in the MH normal weight group, the odds of prediabetes were at least two times higher in the MU obesity (odds ratio [OR], 2.54; P < .001) and MU overweight (OR, 2.06; P < .001) groups but not significantly different in the MU normal weight, MH obesity, and MH overweight groups.

IN PRACTICE:

The authors wrote, “Overall, the results of this cross-sectional study support the notion that metabolically healthy individuals with overweight or obesity have a more favorable metabolic risk profile in comparison to metabolically unhealthy subjects with overweight or obesity.”

SOURCE:

The study was conducted by Chiara M.A. Cefalo, MD, department of clinical and molecular medicine, Sapienza University of Rome, Rome, Italy, and was published online in Diabetes, Obesity and Metabolism.

LIMITATIONS:

There was no consensus on the parameters and cutoff values for defining metabolic health status, allowing for potential variations in results. The study design suggested an association with prevalent IFG and IGT conditions but not with incident IFG and IGT conditions. All participants in this study were White, limiting the generalizability of its findings.

DISCLOSURES:

The study was supported by Sapienza University of Rome and the Italian Ministry of University. The authors declared no conflicts of interest.

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

TOPLINE:

Whether they have normal weight, overweight, or obesity, individuals with metabolically healthy (MH) phenotypes show a lower frequency of impaired glucose metabolism than their unhealthy counterparts across all weight categories.

METHODOLOGY:

• The concepts of MH overweight and MH obesity refer to a subset of people who exhibit an absence of cardiometabolic risk factors despite excess body fat, but the prevalence of prediabetes has not been investigated by metabolic phenotype and body mass index (BMI).
• This study first validated the use of estimated glucose disposal rate (eGDR), an index of insulin sensitivity calculated from clinical variables, in 350 individuals without diabetes (mean age, 37 years; 219 women; mean BMI, 30.3) from the EUGENE2 project who had varying glucose tolerance values originally assessed by insulin-stimulated glucose disposal.
• Researchers then stratified 2201 participants without diabetes (mean age, 46 years; White; 1290 women; mean BMI, 31.2) from the CATAMERI study according to BMI into three groups — individuals with normal weight (BMI, 18-24.9), overweight (BMI, 25-29.9), and obesity (BMI, ≥ 30).
• The men and women in each BMI group were separated into quartiles of insulin sensitivity based on eGDR index:
• In the normal weight group, men and women were defined as MH in the top three eGDR quartiles and metabolically unhealthy (MU) in the lowest quartile.
• In the overweight and obesity groups, people were defined as MH in the top eGDR quartile and MU in the lower three quartiles.
• Impaired glucose tolerance (IGT), impaired fasting glucose (IFG), and combined IFG+IGT conditions (from an oral glucose tolerance test) were compared in individuals without diabetes based on MH or unhealthy phenotypes across normal weight, overweight, and obese categories.

TAKEAWAY:

• eGDR demonstrated good accuracy in detecting individuals with higher insulin sensitivity in the EUGENE2 cohort.
• The MH overweight and MH obesity groups showed comparable glycemic parameters as the MH normal weight group, whereas the MU overweight and MU obesity groups exhibited higher A1c levels and fasting and 2-hour post-load glucose than the MH normal weight group.
• The frequencies of IFG, IGT, and IFG+IGT conditions were similar among the MH normal weight, MH overweight, and MH obesity groups but were higher in the MU overweight and MU obesity groups than in the MU normal weight group.
• Furthermore, compared with those in the MH normal weight group, the odds of prediabetes were at least two times higher in the MU obesity (odds ratio [OR], 2.54; P < .001) and MU overweight (OR, 2.06; P < .001) groups but not significantly different in the MU normal weight, MH obesity, and MH overweight groups.

IN PRACTICE:

The authors wrote, “Overall, the results of this cross-sectional study support the notion that metabolically healthy individuals with overweight or obesity have a more favorable metabolic risk profile in comparison to metabolically unhealthy subjects with overweight or obesity.”

SOURCE:

The study was conducted by Chiara M.A. Cefalo, MD, department of clinical and molecular medicine, Sapienza University of Rome, Rome, Italy, and was published online in Diabetes, Obesity and Metabolism.

LIMITATIONS:

There was no consensus on the parameters and cutoff values for defining metabolic health status, allowing for potential variations in results. The study design suggested an association with prevalent IFG and IGT conditions but not with incident IFG and IGT conditions. All participants in this study were White, limiting the generalizability of its findings.

DISCLOSURES:

The study was supported by Sapienza University of Rome and the Italian Ministry of University. The authors declared no conflicts of interest.

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

TOPLINE:

Whether they have normal weight, overweight, or obesity, individuals with metabolically healthy (MH) phenotypes show a lower frequency of impaired glucose metabolism than their unhealthy counterparts across all weight categories.

METHODOLOGY:

• The concepts of MH overweight and MH obesity refer to a subset of people who exhibit an absence of cardiometabolic risk factors despite excess body fat, but the prevalence of prediabetes has not been investigated by metabolic phenotype and body mass index (BMI).
• This study first validated the use of estimated glucose disposal rate (eGDR), an index of insulin sensitivity calculated from clinical variables, in 350 individuals without diabetes (mean age, 37 years; 219 women; mean BMI, 30.3) from the EUGENE2 project who had varying glucose tolerance values originally assessed by insulin-stimulated glucose disposal.
• Researchers then stratified 2201 participants without diabetes (mean age, 46 years; White; 1290 women; mean BMI, 31.2) from the CATAMERI study according to BMI into three groups — individuals with normal weight (BMI, 18-24.9), overweight (BMI, 25-29.9), and obesity (BMI, ≥ 30).
• The men and women in each BMI group were separated into quartiles of insulin sensitivity based on eGDR index:
• In the normal weight group, men and women were defined as MH in the top three eGDR quartiles and metabolically unhealthy (MU) in the lowest quartile.
• In the overweight and obesity groups, people were defined as MH in the top eGDR quartile and MU in the lower three quartiles.
• Impaired glucose tolerance (IGT), impaired fasting glucose (IFG), and combined IFG+IGT conditions (from an oral glucose tolerance test) were compared in individuals without diabetes based on MH or unhealthy phenotypes across normal weight, overweight, and obese categories.

TAKEAWAY:

• eGDR demonstrated good accuracy in detecting individuals with higher insulin sensitivity in the EUGENE2 cohort.
• The MH overweight and MH obesity groups showed comparable glycemic parameters as the MH normal weight group, whereas the MU overweight and MU obesity groups exhibited higher A1c levels and fasting and 2-hour post-load glucose than the MH normal weight group.
• The frequencies of IFG, IGT, and IFG+IGT conditions were similar among the MH normal weight, MH overweight, and MH obesity groups but were higher in the MU overweight and MU obesity groups than in the MU normal weight group.
• Furthermore, compared with those in the MH normal weight group, the odds of prediabetes were at least two times higher in the MU obesity (odds ratio [OR], 2.54; P < .001) and MU overweight (OR, 2.06; P < .001) groups but not significantly different in the MU normal weight, MH obesity, and MH overweight groups.

IN PRACTICE:

The authors wrote, “Overall, the results of this cross-sectional study support the notion that metabolically healthy individuals with overweight or obesity have a more favorable metabolic risk profile in comparison to metabolically unhealthy subjects with overweight or obesity.”

SOURCE:

The study was conducted by Chiara M.A. Cefalo, MD, department of clinical and molecular medicine, Sapienza University of Rome, Rome, Italy, and was published online in Diabetes, Obesity and Metabolism.

LIMITATIONS:

There was no consensus on the parameters and cutoff values for defining metabolic health status, allowing for potential variations in results. The study design suggested an association with prevalent IFG and IGT conditions but not with incident IFG and IGT conditions. All participants in this study were White, limiting the generalizability of its findings.

DISCLOSURES:

The study was supported by Sapienza University of Rome and the Italian Ministry of University. The authors declared no conflicts of interest.

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

TOPLINE:

Mortality and disability-adjusted life years (DALYs) among people with type 1 diabetes (T1D) aged ≥ 65 years dropped significantly from 1990 to 2019. Both were lower among women and those living in higher sociodemographic areas.

METHODOLOGY:

• A population-based study of adults aged ≥ 65 years from 21 regions and 204 countries and territories, 1990-2019, was conducted.

TAKEAWAY:

• Globally, the prevalence of T1D among people aged ≥ 65 years increased by 180% between 1990 and 2019, from 1.3 million to 3.7 million.
• The proportion of older people with T1D has consistently trended upward, from 12% of all people with T1D in 1990 to 17% in 2019.
• Age-standardized mortality from T1D among this age group significantly decreased by 25%, from 4.7/100,000 population in 1990 to 3.5/100,000 in 2019.
• Age-standardized increases in T1D prevalence have occurred in both men and women worldwide, while the increase was more rapid among men (average annual percent change, 1.00% vs 0.74%).
• Globally, T1D prevalence at least tripled in every age subgroup of those aged ≥ 65 years, and even fivefold to sixfold for those ≥ 90-95 years (0.02-0.11 million for ages 90-94 years; 0.005-0.03 million for ages ≥ 95 years).
• No decreases occurred in T1D prevalence among those aged ≥ 65 years in any of the 21 global regions.
• Three primary risk factors associated with DALYs for T1D among people aged ≥ 65 years were high fasting plasma glucose levels, low temperature, and high temperature, accounting for 103 DALYs per 100,000 people, 3/100,000 people, and 1/100,000 people, respectively, in 2019.

IN PRACTICE:

“The results suggest that T1DM is no longer a contributory factor in decreased life expectancy owing to improvements in medical care over the three decades,” the authors wrote. “Management of high fasting plasma glucose levels remains a major challenge for older people with T1D, and targeted clinical guidelines are needed.”

SOURCE:

The study was conducted by Kaijie Yang, the Department of Endocrinology and Metabolism, the Institute of Endocrinology, NHC Key Laboratory of Diagnosis and Treatment of Thyroid Diseases, First Hospital of China Medical University, Shenyang, China, and colleagues. The study was published online in the BMJ.

LIMITATIONS:

Data were extrapolated from countries that have epidemiologic data. Health information systems and reporting mechanisms vary across countries and regions. Disease burden data include a time lag. Diagnosing T1D in older people can be challenging.

DISCLOSURES:

The study was supported by the National Natural Science Foundation of China and the China Postdoctoral Science Foundation. The authors reported no additional financial relationships.

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

TOPLINE:

Mortality and disability-adjusted life years (DALYs) among people with type 1 diabetes (T1D) aged ≥ 65 years dropped significantly from 1990 to 2019. Both were lower among women and those living in higher sociodemographic areas.

METHODOLOGY:

• A population-based study of adults aged ≥ 65 years from 21 regions and 204 countries and territories, 1990-2019, was conducted.

TAKEAWAY:

• Globally, the prevalence of T1D among people aged ≥ 65 years increased by 180% between 1990 and 2019, from 1.3 million to 3.7 million.
• The proportion of older people with T1D has consistently trended upward, from 12% of all people with T1D in 1990 to 17% in 2019.
• Age-standardized mortality from T1D among this age group significantly decreased by 25%, from 4.7/100,000 population in 1990 to 3.5/100,000 in 2019.
• Age-standardized increases in T1D prevalence have occurred in both men and women worldwide, while the increase was more rapid among men (average annual percent change, 1.00% vs 0.74%).
• Globally, T1D prevalence at least tripled in every age subgroup of those aged ≥ 65 years, and even fivefold to sixfold for those ≥ 90-95 years (0.02-0.11 million for ages 90-94 years; 0.005-0.03 million for ages ≥ 95 years).
• No decreases occurred in T1D prevalence among those aged ≥ 65 years in any of the 21 global regions.
• Three primary risk factors associated with DALYs for T1D among people aged ≥ 65 years were high fasting plasma glucose levels, low temperature, and high temperature, accounting for 103 DALYs per 100,000 people, 3/100,000 people, and 1/100,000 people, respectively, in 2019.

IN PRACTICE:

“The results suggest that T1DM is no longer a contributory factor in decreased life expectancy owing to improvements in medical care over the three decades,” the authors wrote. “Management of high fasting plasma glucose levels remains a major challenge for older people with T1D, and targeted clinical guidelines are needed.”

SOURCE:

The study was conducted by Kaijie Yang, the Department of Endocrinology and Metabolism, the Institute of Endocrinology, NHC Key Laboratory of Diagnosis and Treatment of Thyroid Diseases, First Hospital of China Medical University, Shenyang, China, and colleagues. The study was published online in the BMJ.

LIMITATIONS:

Data were extrapolated from countries that have epidemiologic data. Health information systems and reporting mechanisms vary across countries and regions. Disease burden data include a time lag. Diagnosing T1D in older people can be challenging.

DISCLOSURES:

The study was supported by the National Natural Science Foundation of China and the China Postdoctoral Science Foundation. The authors reported no additional financial relationships.

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

TOPLINE:

Mortality and disability-adjusted life years (DALYs) among people with type 1 diabetes (T1D) aged ≥ 65 years dropped significantly from 1990 to 2019. Both were lower among women and those living in higher sociodemographic areas.

METHODOLOGY:

• A population-based study of adults aged ≥ 65 years from 21 regions and 204 countries and territories, 1990-2019, was conducted.

TAKEAWAY:

• Globally, the prevalence of T1D among people aged ≥ 65 years increased by 180% between 1990 and 2019, from 1.3 million to 3.7 million.
• The proportion of older people with T1D has consistently trended upward, from 12% of all people with T1D in 1990 to 17% in 2019.
• Age-standardized mortality from T1D among this age group significantly decreased by 25%, from 4.7/100,000 population in 1990 to 3.5/100,000 in 2019.
• Age-standardized increases in T1D prevalence have occurred in both men and women worldwide, while the increase was more rapid among men (average annual percent change, 1.00% vs 0.74%).
• Globally, T1D prevalence at least tripled in every age subgroup of those aged ≥ 65 years, and even fivefold to sixfold for those ≥ 90-95 years (0.02-0.11 million for ages 90-94 years; 0.005-0.03 million for ages ≥ 95 years).
• No decreases occurred in T1D prevalence among those aged ≥ 65 years in any of the 21 global regions.
• Three primary risk factors associated with DALYs for T1D among people aged ≥ 65 years were high fasting plasma glucose levels, low temperature, and high temperature, accounting for 103 DALYs per 100,000 people, 3/100,000 people, and 1/100,000 people, respectively, in 2019.

IN PRACTICE:

“The results suggest that T1DM is no longer a contributory factor in decreased life expectancy owing to improvements in medical care over the three decades,” the authors wrote. “Management of high fasting plasma glucose levels remains a major challenge for older people with T1D, and targeted clinical guidelines are needed.”

SOURCE:

The study was conducted by Kaijie Yang, the Department of Endocrinology and Metabolism, the Institute of Endocrinology, NHC Key Laboratory of Diagnosis and Treatment of Thyroid Diseases, First Hospital of China Medical University, Shenyang, China, and colleagues. The study was published online in the BMJ.

LIMITATIONS:

Data were extrapolated from countries that have epidemiologic data. Health information systems and reporting mechanisms vary across countries and regions. Disease burden data include a time lag. Diagnosing T1D in older people can be challenging.

DISCLOSURES:

The study was supported by the National Natural Science Foundation of China and the China Postdoctoral Science Foundation. The authors reported no additional financial relationships.

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

TOPLINE:

Bariatric metabolic surgery (BMS) offers a survival advantage over glucagon-like peptide 1 receptor agonists (GLP-1 RAs) in adults with obesity and diabetes for 10 years or less, which may be explained by greater weight loss with surgery, new research shows.

METHODOLOGY:

• There is limited evidence regarding the relative effectiveness of BMS and GLP-1 RAs in reducing mortality and major adverse cardiovascular events (MACE).
• This observational, retrospective cohort study analyzed the electronic medical records of Clalit Health Services, Israel’s largest healthcare organization.
• Researchers included patients aged 24 years or older who had diabetes and obesity but no prior cardiovascular disease and who either underwent BMS or received a GLP-1 RA.
• The primary outcome was all-cause mortality, assessed by multivariate Cox proportional hazards regression models. The secondary outcome was nonfatal MACE, assessed by multivariate competing risk models.

TAKEAWAY:

• Researchers included 3035 matched pairs of patients (total, 6070; mean age, 51 years; 65% women), who were followed for a median of 6.8 years.
• Among patients with diabetes for 10 years or less, those who underwent BMS had a 62% lower risk for mortality than those treated with a GLP-1 RA (hazard ratio [HR], 0.38).
• The survival advantage associated with BMS vs GLP-1 RA may be explained by the greater relative decrease in body mass index in the surgery group (–31.4% vs –12.8%, respectively).
• Among patients with diabetes for more than 10 years, no survival advantage was observed for BMS over GLP-1 RA (HR, 0.65), which may be explained by the adverse effects of prolonged diabetes duration masking the benefit associated with weight loss.
• The risk for nonfatal MACE did not differ significantly between the treatment groups in both diabetes duration categories.

IN PRACTICE:

“This study suggests that BMS was associated with greater reduced mortality compared with GLP-1 RAs among individuals with a diabetes duration of 10 years or less, mediated via greater weight loss,” the authors wrote.

SOURCE:

The study, with first author Dror Dicker, MD, Hasharon Hospital, Rabin Medical Center, Petah Tikva, Israel, was published online in JAMA Network Open.

LIMITATIONS:

The observational design may have introduced residual confounding despite matching and multivariable adjustment. The analyses did not account for the types of BMS or GLP-1 RAs or the level of adherence to GLP-1 RA treatment. Information regarding cause of death was unavailable.

DISCLOSURES:

The study was funded by the Israel Science Foundation. Dicker reported financial relationships with Novo Nordisk, Eli Lilly, and Boehringer Ingelheim.

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

TOPLINE:

Bariatric metabolic surgery (BMS) offers a survival advantage over glucagon-like peptide 1 receptor agonists (GLP-1 RAs) in adults with obesity and diabetes for 10 years or less, which may be explained by greater weight loss with surgery, new research shows.

METHODOLOGY:

• There is limited evidence regarding the relative effectiveness of BMS and GLP-1 RAs in reducing mortality and major adverse cardiovascular events (MACE).
• This observational, retrospective cohort study analyzed the electronic medical records of Clalit Health Services, Israel’s largest healthcare organization.
• Researchers included patients aged 24 years or older who had diabetes and obesity but no prior cardiovascular disease and who either underwent BMS or received a GLP-1 RA.
• The primary outcome was all-cause mortality, assessed by multivariate Cox proportional hazards regression models. The secondary outcome was nonfatal MACE, assessed by multivariate competing risk models.

TAKEAWAY:

• Researchers included 3035 matched pairs of patients (total, 6070; mean age, 51 years; 65% women), who were followed for a median of 6.8 years.
• Among patients with diabetes for 10 years or less, those who underwent BMS had a 62% lower risk for mortality than those treated with a GLP-1 RA (hazard ratio [HR], 0.38).
• The survival advantage associated with BMS vs GLP-1 RA may be explained by the greater relative decrease in body mass index in the surgery group (–31.4% vs –12.8%, respectively).
• Among patients with diabetes for more than 10 years, no survival advantage was observed for BMS over GLP-1 RA (HR, 0.65), which may be explained by the adverse effects of prolonged diabetes duration masking the benefit associated with weight loss.
• The risk for nonfatal MACE did not differ significantly between the treatment groups in both diabetes duration categories.

IN PRACTICE:

“This study suggests that BMS was associated with greater reduced mortality compared with GLP-1 RAs among individuals with a diabetes duration of 10 years or less, mediated via greater weight loss,” the authors wrote.

SOURCE:

The study, with first author Dror Dicker, MD, Hasharon Hospital, Rabin Medical Center, Petah Tikva, Israel, was published online in JAMA Network Open.

LIMITATIONS:

The observational design may have introduced residual confounding despite matching and multivariable adjustment. The analyses did not account for the types of BMS or GLP-1 RAs or the level of adherence to GLP-1 RA treatment. Information regarding cause of death was unavailable.

DISCLOSURES:

The study was funded by the Israel Science Foundation. Dicker reported financial relationships with Novo Nordisk, Eli Lilly, and Boehringer Ingelheim.

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

TOPLINE:

Bariatric metabolic surgery (BMS) offers a survival advantage over glucagon-like peptide 1 receptor agonists (GLP-1 RAs) in adults with obesity and diabetes for 10 years or less, which may be explained by greater weight loss with surgery, new research shows.

METHODOLOGY:

• There is limited evidence regarding the relative effectiveness of BMS and GLP-1 RAs in reducing mortality and major adverse cardiovascular events (MACE).
• This observational, retrospective cohort study analyzed the electronic medical records of Clalit Health Services, Israel’s largest healthcare organization.
• Researchers included patients aged 24 years or older who had diabetes and obesity but no prior cardiovascular disease and who either underwent BMS or received a GLP-1 RA.
• The primary outcome was all-cause mortality, assessed by multivariate Cox proportional hazards regression models. The secondary outcome was nonfatal MACE, assessed by multivariate competing risk models.

TAKEAWAY:

• Researchers included 3035 matched pairs of patients (total, 6070; mean age, 51 years; 65% women), who were followed for a median of 6.8 years.
• Among patients with diabetes for 10 years or less, those who underwent BMS had a 62% lower risk for mortality than those treated with a GLP-1 RA (hazard ratio [HR], 0.38).
• The survival advantage associated with BMS vs GLP-1 RA may be explained by the greater relative decrease in body mass index in the surgery group (–31.4% vs –12.8%, respectively).
• Among patients with diabetes for more than 10 years, no survival advantage was observed for BMS over GLP-1 RA (HR, 0.65), which may be explained by the adverse effects of prolonged diabetes duration masking the benefit associated with weight loss.
• The risk for nonfatal MACE did not differ significantly between the treatment groups in both diabetes duration categories.

IN PRACTICE:

“This study suggests that BMS was associated with greater reduced mortality compared with GLP-1 RAs among individuals with a diabetes duration of 10 years or less, mediated via greater weight loss,” the authors wrote.

SOURCE:

The study, with first author Dror Dicker, MD, Hasharon Hospital, Rabin Medical Center, Petah Tikva, Israel, was published online in JAMA Network Open.

LIMITATIONS:

The observational design may have introduced residual confounding despite matching and multivariable adjustment. The analyses did not account for the types of BMS or GLP-1 RAs or the level of adherence to GLP-1 RA treatment. Information regarding cause of death was unavailable.

DISCLOSURES:

The study was funded by the Israel Science Foundation. Dicker reported financial relationships with Novo Nordisk, Eli Lilly, and Boehringer Ingelheim.

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

It seems intuitive that, because people with type 2 diabetes (T2D) generally need to avoid sugar, clinicians should recommend eating foods and using recipes containing artificial sweeteners such as sucralose instead.

Splenda, which produces sucralose and other non-sugar sweeteners (NSS), is a sponsor of the American Diabetes Association (ADA) Diabetes Food Hub. Earlier in 2024, the ADA settled a lawsuit regarding its former director of nutrition’s refusal to approve recipes containing sucralose (Splenda), which she believed “flew in the face of the ADA’s mission.” 

Experts agree that, while artificial sweeteners may help in certain scenarios, they can also be harmful.

“There’s not a lot of evidence that sweeteners like sucralose provide significant benefits, especially over the long term,” said Susan Swithers, PhD, professor, department of psychological sciences and associate dean for faculty affairs at Purdue University, West Lafayette, Indiana.

Dr. Swithers authored an article several years ago cautioning that consuming nonnutritive sweeteners in beverages not only fails to prevent disease but also is associated with an increase in risks for the same health outcomes associated with sugar-sweetened beverages, including T2D, cardiovascular disease, hypertension, and stroke.

“At this point, we have pretty good evidence that these chemicals that were once touted as being completely inert are, in fact, not inert,” she said. “We know that they’re unlikely to be toxic in the short term, but they are not benign, and they have consequences. Right now, we have little understanding of the outcomes of consumption of these products chronically.”
 

What the Science Says

In 2023, the World Health Organization (WHO) released a guideline on NSS that recommended against their use for weight control or to reduce the risk for noncommunicable diseases.

The systematic review and meta-analysis upon which the guideline is based found that high intakes of NSS were associated with increases in body mass index and, as Dr. Swithers found, risks of developing T2D, cardiovascular events, and any type of stroke, as well as hypertension, bladder cancer, and all-cause mortality.

In a press release announcing the guideline, Francesco Branca, WHO director for Nutrition and Food Safety, said, “NSS are not essential dietary factors and have no nutritional value. People should reduce the sweetness of the diet altogether, starting early in life, to improve their health.” 

The “common” NSS named by WHO included sucralose, as well as acesulfame K, aspartame, advantame, cyclamates, neotame, saccharin, stevia, and stevia derivatives.

If NSS consumption can increase T2D risk, what about people who already have T2D? 

Some research suggests that NSS may affect people with and without T2D differently, said Dr. Swithers. For example, one small study showed that sucralose enhanced glucagon-like peptide 1 release and lowered blood glucose in healthy patients but not in patients with newly diagnosed T2D.

Similarly, Jotham Suez, PhD, an assistant professor in the department of molecular microbiology and immunology at Johns Hopkins Bloomberg School of Public Health in Baltimore, Maryland, said in an interview that his group “showed for the first time in 2014 that disruption of the microbiome by artificial sweeteners is causally linked to disrupted glycemic control.” 

Recently, the team studied the impact of sucralose, aspartame, saccharin, and stevia in healthy adults and “were surprised to discover that all four sweeteners altered gut bacteria and the molecules they secrete,” he said. However, subsequent glucose tolerance tests in healthy humans showed varying results, “suggesting that human microbiome responses to the nonnutritive sweeteners we assessed are highly personalized and may lead to glycemic alterations in some, but not all, consumers depending on their microbes and the sweeteners they consume.” 

Nevertheless, a recent review led by researchers in Mexico concluded that sucralose consumption “is associated with various adverse health effects. Despite being considered safe following previous studies, recent research suggests possible links to systemic inflammation, metabolic diseases, disruptions in gut microbiota, liver damage, and toxic effects at the cellular level.” 

In addition, they wrote, “it is crucial to highlight the persistence of sucralose in the body, its ability to cross the placenta, and its presence in breast milk, raising concerns about prenatal and neonatal exposure.” 

Sabyasachi Sen, MD, a professor of biochemistry and molecular medicine at George Washington School of Medicine & Health Sciences, Washington, DC, has led and coauthored preclinical and clinical studies demonstrating the potential ill effects of sucralose and other artificial sweeteners. One showed that sucralose and acesulfame potassium–containing diet soda altered microbial taxa in two pilot studies in healthy young adults; another showed a connection between artificial sweeteners and inflammation.

But Dr. Sen’s current work is directed at his team’s finding that sucralose promotes the accumulation of reactive oxygen species and adipogenesis in human stem cells, he said in an interview. “It is essentially an additive that is clearly harmful to cells. Our concern is that stem cells are going to remain in the system for a long period of time. If it is causing inflammation in these cells, then that may lead to adverse outcomes.”

Ruchi Mathur, MD, director of the Diabetes Outpatient Treatment & Education Center at Cedars-Sinai in Los Angeles, California, is the principal investigator of a recent study suggesting that non-aspartame NSS and aspartame alone may alter the structure and function of the stool and duodenal microbiomes. Levels of circulating inflammatory markers were also altered in participants who consumed artificial sweeteners, compared with control participants who did not.

In addition to these potential adverse effects, “we have to think about the fact that patients with diabetes often have other comorbidities like obesity and are at higher risk for cardiovascular disease and other conditions,” she said in an interview. “If you’re taking a patient who’s already at risk for those things and you don’t have a detailed discussion with them about pros and cons, you’re doing them a disservice.” 
 

Industry Interests

Addressing the largely negative but varying findings, Dr. Swithers said, “one of the difficulties with getting clear answers about the science is that the food and beverage industry has an interest in confusing the picture. If people are selling or using a product, the best thing is for them not have a clear reason to change their behavior. All that needs to happen is for them to be able say, ‘well, it’s not clear, and we don’t really know what’s going on, so I’m just going to keep doing what I’m doing.’ Then the producers and sellers of that product have won.” 

“As Upton Sinclair said,” she added, “‘It is difficult to get a man to understand something when his salary depends on his not understanding it.’ When organizations like ADA appear to be promoting a product like sucralose, and they’re not always being clear about disclosing the funding, I think that’s problematic.”

In fact, some recipes in the ADA’s hub that contain Splenda are marked sponsored, such as the four-ingredient peanut butter cookies; others, such as gluten-free brownies, are not — even though the latter contains “1/4 cup plus 1 tbsp” of Splenda Sugar Blend (Splenda produces several nonnutritive sweeteners, not all of which contain sucralose). Splenda is a sponsor of the ADA’s hub.
 

Consume in Moderation?

Regarding the use of Splenda products, Robert Gabbay, MD, PhD, the ADA’s chief scientific and medical officer, said in an interview that “some people with diabetes are accustomed to regularly consuming sugar-sweetened products, which can make management of their diabetes more challenging. As highlighted in the ADA’s Standards of Care, nonnutritive sweeteners (containing few or no calories) may be an acceptable substitute for sweeteners that contain sugar and calories when consumed in moderation. By providing a diabetes-friendly way to prepare foods people are used to eating, we can meet people where they are in offering support to effectively manage their diabetes.”

Of course, “moderation” means different things to different people. “With sucralose in particular, you can bake with it, you can cook with it, and beverages and packaged foods contain it, so it’s easy to end up overconsuming foods that may be fine if they’re occasional treats but aren’t healthy choices to have every single day,” Dr. Swithers said. “If you’re having a cookie containing sucralose once a week, it’s not a big deal, but if you’re having a cookie or a brownie every day, that’s something different.”

“I think ‘everything in moderation’ is a very reasonable approach here,” Dr. Mathur said. “Anything too much is probably not good, and that includes sweeteners like sucralose and others.”

Dr. Suez, whose team is currently exploring the mechanisms through which gut bacteria interact with nonnutritive sweeteners in the pathogenesis of cardiometabolic diseases, was more circumspect.

“We believe that additional, long-term, and non–industry-sponsored studies in humans are needed before we can make a recommendation in favor or against the use of nonnutritive sweeteners,” he said.

“However, our results demonstrating that nonnutritive sweeteners are not inert, when taken together with a growing body of evidence on potential harms of these sweeteners, merit caution until additional studies are completed,” he added. “Our findings do not imply in any way that sugar consumption, shown to be harmful to human health in many studies, is superior to nonnutritive sweeteners. Sugar consumption should be minimized, especially in individuals with obesity or diabetes. Of all the options, unsweetened beverages, specifically water, seem to be the safest and best options.”

Dr. Sen, who also “tries to convince patients to have sparkling or cold bottled water,” instead of artificially sweetened soda, agreed. “If a diabetes patient is trying to choose between sugar and sucralose, I’m not sure which one is worse.”

Dr. Swithers, Dr. Mathur, Dr. Sen, and Dr. Suez declared no competing interests.

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

It seems intuitive that, because people with type 2 diabetes (T2D) generally need to avoid sugar, clinicians should recommend eating foods and using recipes containing artificial sweeteners such as sucralose instead.

Splenda, which produces sucralose and other non-sugar sweeteners (NSS), is a sponsor of the American Diabetes Association (ADA) Diabetes Food Hub. Earlier in 2024, the ADA settled a lawsuit regarding its former director of nutrition’s refusal to approve recipes containing sucralose (Splenda), which she believed “flew in the face of the ADA’s mission.” 

Experts agree that, while artificial sweeteners may help in certain scenarios, they can also be harmful.

“There’s not a lot of evidence that sweeteners like sucralose provide significant benefits, especially over the long term,” said Susan Swithers, PhD, professor, department of psychological sciences and associate dean for faculty affairs at Purdue University, West Lafayette, Indiana.

Dr. Swithers authored an article several years ago cautioning that consuming nonnutritive sweeteners in beverages not only fails to prevent disease but also is associated with an increase in risks for the same health outcomes associated with sugar-sweetened beverages, including T2D, cardiovascular disease, hypertension, and stroke.

“At this point, we have pretty good evidence that these chemicals that were once touted as being completely inert are, in fact, not inert,” she said. “We know that they’re unlikely to be toxic in the short term, but they are not benign, and they have consequences. Right now, we have little understanding of the outcomes of consumption of these products chronically.”
 

What the Science Says

In 2023, the World Health Organization (WHO) released a guideline on NSS that recommended against their use for weight control or to reduce the risk for noncommunicable diseases.

The systematic review and meta-analysis upon which the guideline is based found that high intakes of NSS were associated with increases in body mass index and, as Dr. Swithers found, risks of developing T2D, cardiovascular events, and any type of stroke, as well as hypertension, bladder cancer, and all-cause mortality.

In a press release announcing the guideline, Francesco Branca, WHO director for Nutrition and Food Safety, said, “NSS are not essential dietary factors and have no nutritional value. People should reduce the sweetness of the diet altogether, starting early in life, to improve their health.” 

The “common” NSS named by WHO included sucralose, as well as acesulfame K, aspartame, advantame, cyclamates, neotame, saccharin, stevia, and stevia derivatives.

If NSS consumption can increase T2D risk, what about people who already have T2D? 

Some research suggests that NSS may affect people with and without T2D differently, said Dr. Swithers. For example, one small study showed that sucralose enhanced glucagon-like peptide 1 release and lowered blood glucose in healthy patients but not in patients with newly diagnosed T2D.

Similarly, Jotham Suez, PhD, an assistant professor in the department of molecular microbiology and immunology at Johns Hopkins Bloomberg School of Public Health in Baltimore, Maryland, said in an interview that his group “showed for the first time in 2014 that disruption of the microbiome by artificial sweeteners is causally linked to disrupted glycemic control.” 

Recently, the team studied the impact of sucralose, aspartame, saccharin, and stevia in healthy adults and “were surprised to discover that all four sweeteners altered gut bacteria and the molecules they secrete,” he said. However, subsequent glucose tolerance tests in healthy humans showed varying results, “suggesting that human microbiome responses to the nonnutritive sweeteners we assessed are highly personalized and may lead to glycemic alterations in some, but not all, consumers depending on their microbes and the sweeteners they consume.” 

Nevertheless, a recent review led by researchers in Mexico concluded that sucralose consumption “is associated with various adverse health effects. Despite being considered safe following previous studies, recent research suggests possible links to systemic inflammation, metabolic diseases, disruptions in gut microbiota, liver damage, and toxic effects at the cellular level.” 

In addition, they wrote, “it is crucial to highlight the persistence of sucralose in the body, its ability to cross the placenta, and its presence in breast milk, raising concerns about prenatal and neonatal exposure.” 

Sabyasachi Sen, MD, a professor of biochemistry and molecular medicine at George Washington School of Medicine & Health Sciences, Washington, DC, has led and coauthored preclinical and clinical studies demonstrating the potential ill effects of sucralose and other artificial sweeteners. One showed that sucralose and acesulfame potassium–containing diet soda altered microbial taxa in two pilot studies in healthy young adults; another showed a connection between artificial sweeteners and inflammation.

But Dr. Sen’s current work is directed at his team’s finding that sucralose promotes the accumulation of reactive oxygen species and adipogenesis in human stem cells, he said in an interview. “It is essentially an additive that is clearly harmful to cells. Our concern is that stem cells are going to remain in the system for a long period of time. If it is causing inflammation in these cells, then that may lead to adverse outcomes.”

Ruchi Mathur, MD, director of the Diabetes Outpatient Treatment & Education Center at Cedars-Sinai in Los Angeles, California, is the principal investigator of a recent study suggesting that non-aspartame NSS and aspartame alone may alter the structure and function of the stool and duodenal microbiomes. Levels of circulating inflammatory markers were also altered in participants who consumed artificial sweeteners, compared with control participants who did not.

In addition to these potential adverse effects, “we have to think about the fact that patients with diabetes often have other comorbidities like obesity and are at higher risk for cardiovascular disease and other conditions,” she said in an interview. “If you’re taking a patient who’s already at risk for those things and you don’t have a detailed discussion with them about pros and cons, you’re doing them a disservice.” 
 

Industry Interests

Addressing the largely negative but varying findings, Dr. Swithers said, “one of the difficulties with getting clear answers about the science is that the food and beverage industry has an interest in confusing the picture. If people are selling or using a product, the best thing is for them not have a clear reason to change their behavior. All that needs to happen is for them to be able say, ‘well, it’s not clear, and we don’t really know what’s going on, so I’m just going to keep doing what I’m doing.’ Then the producers and sellers of that product have won.” 

“As Upton Sinclair said,” she added, “‘It is difficult to get a man to understand something when his salary depends on his not understanding it.’ When organizations like ADA appear to be promoting a product like sucralose, and they’re not always being clear about disclosing the funding, I think that’s problematic.”

In fact, some recipes in the ADA’s hub that contain Splenda are marked sponsored, such as the four-ingredient peanut butter cookies; others, such as gluten-free brownies, are not — even though the latter contains “1/4 cup plus 1 tbsp” of Splenda Sugar Blend (Splenda produces several nonnutritive sweeteners, not all of which contain sucralose). Splenda is a sponsor of the ADA’s hub.
 

Consume in Moderation?

Regarding the use of Splenda products, Robert Gabbay, MD, PhD, the ADA’s chief scientific and medical officer, said in an interview that “some people with diabetes are accustomed to regularly consuming sugar-sweetened products, which can make management of their diabetes more challenging. As highlighted in the ADA’s Standards of Care, nonnutritive sweeteners (containing few or no calories) may be an acceptable substitute for sweeteners that contain sugar and calories when consumed in moderation. By providing a diabetes-friendly way to prepare foods people are used to eating, we can meet people where they are in offering support to effectively manage their diabetes.”

Of course, “moderation” means different things to different people. “With sucralose in particular, you can bake with it, you can cook with it, and beverages and packaged foods contain it, so it’s easy to end up overconsuming foods that may be fine if they’re occasional treats but aren’t healthy choices to have every single day,” Dr. Swithers said. “If you’re having a cookie containing sucralose once a week, it’s not a big deal, but if you’re having a cookie or a brownie every day, that’s something different.”

“I think ‘everything in moderation’ is a very reasonable approach here,” Dr. Mathur said. “Anything too much is probably not good, and that includes sweeteners like sucralose and others.”

Dr. Suez, whose team is currently exploring the mechanisms through which gut bacteria interact with nonnutritive sweeteners in the pathogenesis of cardiometabolic diseases, was more circumspect.

“We believe that additional, long-term, and non–industry-sponsored studies in humans are needed before we can make a recommendation in favor or against the use of nonnutritive sweeteners,” he said.

“However, our results demonstrating that nonnutritive sweeteners are not inert, when taken together with a growing body of evidence on potential harms of these sweeteners, merit caution until additional studies are completed,” he added. “Our findings do not imply in any way that sugar consumption, shown to be harmful to human health in many studies, is superior to nonnutritive sweeteners. Sugar consumption should be minimized, especially in individuals with obesity or diabetes. Of all the options, unsweetened beverages, specifically water, seem to be the safest and best options.”

Dr. Sen, who also “tries to convince patients to have sparkling or cold bottled water,” instead of artificially sweetened soda, agreed. “If a diabetes patient is trying to choose between sugar and sucralose, I’m not sure which one is worse.”

Dr. Swithers, Dr. Mathur, Dr. Sen, and Dr. Suez declared no competing interests.

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

It seems intuitive that, because people with type 2 diabetes (T2D) generally need to avoid sugar, clinicians should recommend eating foods and using recipes containing artificial sweeteners such as sucralose instead.

Splenda, which produces sucralose and other non-sugar sweeteners (NSS), is a sponsor of the American Diabetes Association (ADA) Diabetes Food Hub. Earlier in 2024, the ADA settled a lawsuit regarding its former director of nutrition’s refusal to approve recipes containing sucralose (Splenda), which she believed “flew in the face of the ADA’s mission.” 

Experts agree that, while artificial sweeteners may help in certain scenarios, they can also be harmful.

“There’s not a lot of evidence that sweeteners like sucralose provide significant benefits, especially over the long term,” said Susan Swithers, PhD, professor, department of psychological sciences and associate dean for faculty affairs at Purdue University, West Lafayette, Indiana.

Dr. Swithers authored an article several years ago cautioning that consuming nonnutritive sweeteners in beverages not only fails to prevent disease but also is associated with an increase in risks for the same health outcomes associated with sugar-sweetened beverages, including T2D, cardiovascular disease, hypertension, and stroke.

“At this point, we have pretty good evidence that these chemicals that were once touted as being completely inert are, in fact, not inert,” she said. “We know that they’re unlikely to be toxic in the short term, but they are not benign, and they have consequences. Right now, we have little understanding of the outcomes of consumption of these products chronically.”
 

What the Science Says

In 2023, the World Health Organization (WHO) released a guideline on NSS that recommended against their use for weight control or to reduce the risk for noncommunicable diseases.

The systematic review and meta-analysis upon which the guideline is based found that high intakes of NSS were associated with increases in body mass index and, as Dr. Swithers found, risks of developing T2D, cardiovascular events, and any type of stroke, as well as hypertension, bladder cancer, and all-cause mortality.

In a press release announcing the guideline, Francesco Branca, WHO director for Nutrition and Food Safety, said, “NSS are not essential dietary factors and have no nutritional value. People should reduce the sweetness of the diet altogether, starting early in life, to improve their health.” 

The “common” NSS named by WHO included sucralose, as well as acesulfame K, aspartame, advantame, cyclamates, neotame, saccharin, stevia, and stevia derivatives.

If NSS consumption can increase T2D risk, what about people who already have T2D? 

Some research suggests that NSS may affect people with and without T2D differently, said Dr. Swithers. For example, one small study showed that sucralose enhanced glucagon-like peptide 1 release and lowered blood glucose in healthy patients but not in patients with newly diagnosed T2D.

Similarly, Jotham Suez, PhD, an assistant professor in the department of molecular microbiology and immunology at Johns Hopkins Bloomberg School of Public Health in Baltimore, Maryland, said in an interview that his group “showed for the first time in 2014 that disruption of the microbiome by artificial sweeteners is causally linked to disrupted glycemic control.” 

Recently, the team studied the impact of sucralose, aspartame, saccharin, and stevia in healthy adults and “were surprised to discover that all four sweeteners altered gut bacteria and the molecules they secrete,” he said. However, subsequent glucose tolerance tests in healthy humans showed varying results, “suggesting that human microbiome responses to the nonnutritive sweeteners we assessed are highly personalized and may lead to glycemic alterations in some, but not all, consumers depending on their microbes and the sweeteners they consume.” 

Nevertheless, a recent review led by researchers in Mexico concluded that sucralose consumption “is associated with various adverse health effects. Despite being considered safe following previous studies, recent research suggests possible links to systemic inflammation, metabolic diseases, disruptions in gut microbiota, liver damage, and toxic effects at the cellular level.” 

In addition, they wrote, “it is crucial to highlight the persistence of sucralose in the body, its ability to cross the placenta, and its presence in breast milk, raising concerns about prenatal and neonatal exposure.” 

Sabyasachi Sen, MD, a professor of biochemistry and molecular medicine at George Washington School of Medicine & Health Sciences, Washington, DC, has led and coauthored preclinical and clinical studies demonstrating the potential ill effects of sucralose and other artificial sweeteners. One showed that sucralose and acesulfame potassium–containing diet soda altered microbial taxa in two pilot studies in healthy young adults; another showed a connection between artificial sweeteners and inflammation.

But Dr. Sen’s current work is directed at his team’s finding that sucralose promotes the accumulation of reactive oxygen species and adipogenesis in human stem cells, he said in an interview. “It is essentially an additive that is clearly harmful to cells. Our concern is that stem cells are going to remain in the system for a long period of time. If it is causing inflammation in these cells, then that may lead to adverse outcomes.”

Ruchi Mathur, MD, director of the Diabetes Outpatient Treatment & Education Center at Cedars-Sinai in Los Angeles, California, is the principal investigator of a recent study suggesting that non-aspartame NSS and aspartame alone may alter the structure and function of the stool and duodenal microbiomes. Levels of circulating inflammatory markers were also altered in participants who consumed artificial sweeteners, compared with control participants who did not.

In addition to these potential adverse effects, “we have to think about the fact that patients with diabetes often have other comorbidities like obesity and are at higher risk for cardiovascular disease and other conditions,” she said in an interview. “If you’re taking a patient who’s already at risk for those things and you don’t have a detailed discussion with them about pros and cons, you’re doing them a disservice.” 
 

Industry Interests

Addressing the largely negative but varying findings, Dr. Swithers said, “one of the difficulties with getting clear answers about the science is that the food and beverage industry has an interest in confusing the picture. If people are selling or using a product, the best thing is for them not have a clear reason to change their behavior. All that needs to happen is for them to be able say, ‘well, it’s not clear, and we don’t really know what’s going on, so I’m just going to keep doing what I’m doing.’ Then the producers and sellers of that product have won.” 

“As Upton Sinclair said,” she added, “‘It is difficult to get a man to understand something when his salary depends on his not understanding it.’ When organizations like ADA appear to be promoting a product like sucralose, and they’re not always being clear about disclosing the funding, I think that’s problematic.”

In fact, some recipes in the ADA’s hub that contain Splenda are marked sponsored, such as the four-ingredient peanut butter cookies; others, such as gluten-free brownies, are not — even though the latter contains “1/4 cup plus 1 tbsp” of Splenda Sugar Blend (Splenda produces several nonnutritive sweeteners, not all of which contain sucralose). Splenda is a sponsor of the ADA’s hub.
 

Consume in Moderation?

Regarding the use of Splenda products, Robert Gabbay, MD, PhD, the ADA’s chief scientific and medical officer, said in an interview that “some people with diabetes are accustomed to regularly consuming sugar-sweetened products, which can make management of their diabetes more challenging. As highlighted in the ADA’s Standards of Care, nonnutritive sweeteners (containing few or no calories) may be an acceptable substitute for sweeteners that contain sugar and calories when consumed in moderation. By providing a diabetes-friendly way to prepare foods people are used to eating, we can meet people where they are in offering support to effectively manage their diabetes.”

Of course, “moderation” means different things to different people. “With sucralose in particular, you can bake with it, you can cook with it, and beverages and packaged foods contain it, so it’s easy to end up overconsuming foods that may be fine if they’re occasional treats but aren’t healthy choices to have every single day,” Dr. Swithers said. “If you’re having a cookie containing sucralose once a week, it’s not a big deal, but if you’re having a cookie or a brownie every day, that’s something different.”

“I think ‘everything in moderation’ is a very reasonable approach here,” Dr. Mathur said. “Anything too much is probably not good, and that includes sweeteners like sucralose and others.”

Dr. Suez, whose team is currently exploring the mechanisms through which gut bacteria interact with nonnutritive sweeteners in the pathogenesis of cardiometabolic diseases, was more circumspect.

“We believe that additional, long-term, and non–industry-sponsored studies in humans are needed before we can make a recommendation in favor or against the use of nonnutritive sweeteners,” he said.

“However, our results demonstrating that nonnutritive sweeteners are not inert, when taken together with a growing body of evidence on potential harms of these sweeteners, merit caution until additional studies are completed,” he added. “Our findings do not imply in any way that sugar consumption, shown to be harmful to human health in many studies, is superior to nonnutritive sweeteners. Sugar consumption should be minimized, especially in individuals with obesity or diabetes. Of all the options, unsweetened beverages, specifically water, seem to be the safest and best options.”

Dr. Sen, who also “tries to convince patients to have sparkling or cold bottled water,” instead of artificially sweetened soda, agreed. “If a diabetes patient is trying to choose between sugar and sucralose, I’m not sure which one is worse.”

Dr. Swithers, Dr. Mathur, Dr. Sen, and Dr. Suez declared no competing interests.

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

WASHINGTON – Women with autoimmune liver diseases (AILD) may face increased risks for major adverse cardiovascular outcomes, according to a study presented at the annual Digestive Disease Week^® (DDW).

In particular, women with autoimmune hepatitis (AIH) and primary biliary cholangitis (PBC) appear to have higher risks than women without AIH or PBC. Those with primary sclerosing cholangitis (PSC) don’t seem to have increased risks.

“We know that cardiovascular disease remains the number one cause of death, but the mortality rate for women over the last decade has plateaued, whereas in men it’s actually declining due to interventions,” said lead author Rachel Redfield, MD, a transplant hepatology fellow at Thomas Jefferson University Hospital in Philadelphia.

“This is likely because we don’t have adequate risk stratification, especially for women,” she said. “We know that immune-mediated diseases — such as rheumatoid arthritis and psoriasis — carry a higher risk of cardiovascular disease, but there’s not a lot of data on our autoimmune liver disease patients.”

Dr. Redfield

Although being a female can offer protection against some CVD risks, the atherosclerotic cardiovascular disease (ASCVD) 10-year risk score calculator recommended by the American College of Cardiology doesn’t include chronic inflammatory diseases associated with increased CVD risk, including AILD.

Dr. Redfield and colleagues conducted a multicenter, retrospective cohort study of patients with AIH, PBC, and PSC from 1999-2019. Using TriNetX data, the researchers looked at women with AILD who also had diabetes mellitus, hypertension, and hyperlipidemia, as well as a control group of men and women with these same disorders, excluding those who used biologics, immune modulators, and steroids or had other autoimmune disorders.

The research team used 1:1 propensity-score matching for women in the study group and in the control group based on age, race, ethnicity, ASCVD risk factors, and tobacco use. Women in the study group and men in the control group were matched for age, race, ethnicity, and tobacco use.

The primary outcome was summative cardiovascular risk, including unstable angina, acute myocardial infarction, presence of coronary angioplasty implant, coronary artery bypass, percutaneous coronary intervention, and cerebral infarction.

Overall, women with AIH had a significantly higher cardiovascular risk compared to women without AIH, at 25.4% versus 20.6% (P = .0007).

Specifically, women with PBC had a significantly higher cardiovascular risk compared to women without PBC, at 27.05% versus 20.9% (P < .0001).

There wasn’t a significant difference in risk between women with and without PSC, at 27.5% versus 21.8% (P = .27).

When compared to men without disease, women with AIH didn’t have a statistically significant higher risk, at 25.3% versus 24.2% (P = .44). Similarly, there didn’t appear to be a significant difference between women with PBC and men without PBC, at 26.9% versus 25.9% (P = .52), or between women with PSC and men without PSC, at 27.7% versus 26.2% (P = .78).

Dr. Redfield and colleagues then compared the ASCVD-calculated risk versus database risk, finding that in each group of women with AILD — including AIH, PBC, and PSC — the ASCVD-calculated risk was around 11%, compared with database risk scores of 25% for AIH, 27% for PBC, and 28% for PSC. These database risks appeared similar to both the ASCVD and database risk percentages for men.

“So potentially there’s an oversight in women with any kind of inflammatory disease, but specifically here, autoimmune liver diseases,” she said. “We really need to enhance our risk assessment strategies to take into account their risk and optimize patient outcomes.”

Dr. Redfield noted the limitations with using TriNetX data, including coding consistency among providers and healthcare organizations, unknown patient follow-up dates, and the inability to capture various inflammatory disease phenotypes, such as autoimmune hepatitis with multiple flares, which may be associated with higher cardiovascular risks.

As an attendee of the DDW session, Kenneth Kelson, MD, a gastroenterologist with Fremont Medical Group and Washington Hospital Healthcare System in Fremont, California, noted the importance of investigating the effects of different types of statins in these patients. Although the research team looked at top-level differences among statin users, finding that women with AILD were more likely to be on a statin, they didn’t incorporate statin therapy in the propensity-score matching model.

“Lipid-soluble statins are known to cause more liver trouble, even though it’s pretty low,” Dr. Kelson said. “Whereas the water-soluble statins have a lower incidence of liver issues.”

Dr. Redfield and Dr. Kelson reported no relevant disclosures.

WASHINGTON – Women with autoimmune liver diseases (AILD) may face increased risks for major adverse cardiovascular outcomes, according to a study presented at the annual Digestive Disease Week^® (DDW).

In particular, women with autoimmune hepatitis (AIH) and primary biliary cholangitis (PBC) appear to have higher risks than women without AIH or PBC. Those with primary sclerosing cholangitis (PSC) don’t seem to have increased risks.

“We know that cardiovascular disease remains the number one cause of death, but the mortality rate for women over the last decade has plateaued, whereas in men it’s actually declining due to interventions,” said lead author Rachel Redfield, MD, a transplant hepatology fellow at Thomas Jefferson University Hospital in Philadelphia.

“This is likely because we don’t have adequate risk stratification, especially for women,” she said. “We know that immune-mediated diseases — such as rheumatoid arthritis and psoriasis — carry a higher risk of cardiovascular disease, but there’s not a lot of data on our autoimmune liver disease patients.”

Dr. Redfield

Although being a female can offer protection against some CVD risks, the atherosclerotic cardiovascular disease (ASCVD) 10-year risk score calculator recommended by the American College of Cardiology doesn’t include chronic inflammatory diseases associated with increased CVD risk, including AILD.

Dr. Redfield and colleagues conducted a multicenter, retrospective cohort study of patients with AIH, PBC, and PSC from 1999-2019. Using TriNetX data, the researchers looked at women with AILD who also had diabetes mellitus, hypertension, and hyperlipidemia, as well as a control group of men and women with these same disorders, excluding those who used biologics, immune modulators, and steroids or had other autoimmune disorders.

The research team used 1:1 propensity-score matching for women in the study group and in the control group based on age, race, ethnicity, ASCVD risk factors, and tobacco use. Women in the study group and men in the control group were matched for age, race, ethnicity, and tobacco use.

The primary outcome was summative cardiovascular risk, including unstable angina, acute myocardial infarction, presence of coronary angioplasty implant, coronary artery bypass, percutaneous coronary intervention, and cerebral infarction.

Overall, women with AIH had a significantly higher cardiovascular risk compared to women without AIH, at 25.4% versus 20.6% (P = .0007).

Specifically, women with PBC had a significantly higher cardiovascular risk compared to women without PBC, at 27.05% versus 20.9% (P < .0001).

There wasn’t a significant difference in risk between women with and without PSC, at 27.5% versus 21.8% (P = .27).

When compared to men without disease, women with AIH didn’t have a statistically significant higher risk, at 25.3% versus 24.2% (P = .44). Similarly, there didn’t appear to be a significant difference between women with PBC and men without PBC, at 26.9% versus 25.9% (P = .52), or between women with PSC and men without PSC, at 27.7% versus 26.2% (P = .78).

Dr. Redfield and colleagues then compared the ASCVD-calculated risk versus database risk, finding that in each group of women with AILD — including AIH, PBC, and PSC — the ASCVD-calculated risk was around 11%, compared with database risk scores of 25% for AIH, 27% for PBC, and 28% for PSC. These database risks appeared similar to both the ASCVD and database risk percentages for men.

“So potentially there’s an oversight in women with any kind of inflammatory disease, but specifically here, autoimmune liver diseases,” she said. “We really need to enhance our risk assessment strategies to take into account their risk and optimize patient outcomes.”

Dr. Redfield noted the limitations with using TriNetX data, including coding consistency among providers and healthcare organizations, unknown patient follow-up dates, and the inability to capture various inflammatory disease phenotypes, such as autoimmune hepatitis with multiple flares, which may be associated with higher cardiovascular risks.

As an attendee of the DDW session, Kenneth Kelson, MD, a gastroenterologist with Fremont Medical Group and Washington Hospital Healthcare System in Fremont, California, noted the importance of investigating the effects of different types of statins in these patients. Although the research team looked at top-level differences among statin users, finding that women with AILD were more likely to be on a statin, they didn’t incorporate statin therapy in the propensity-score matching model.

“Lipid-soluble statins are known to cause more liver trouble, even though it’s pretty low,” Dr. Kelson said. “Whereas the water-soluble statins have a lower incidence of liver issues.”

Dr. Redfield and Dr. Kelson reported no relevant disclosures.

WASHINGTON – Women with autoimmune liver diseases (AILD) may face increased risks for major adverse cardiovascular outcomes, according to a study presented at the annual Digestive Disease Week^® (DDW).

In particular, women with autoimmune hepatitis (AIH) and primary biliary cholangitis (PBC) appear to have higher risks than women without AIH or PBC. Those with primary sclerosing cholangitis (PSC) don’t seem to have increased risks.

“We know that cardiovascular disease remains the number one cause of death, but the mortality rate for women over the last decade has plateaued, whereas in men it’s actually declining due to interventions,” said lead author Rachel Redfield, MD, a transplant hepatology fellow at Thomas Jefferson University Hospital in Philadelphia.

“This is likely because we don’t have adequate risk stratification, especially for women,” she said. “We know that immune-mediated diseases — such as rheumatoid arthritis and psoriasis — carry a higher risk of cardiovascular disease, but there’s not a lot of data on our autoimmune liver disease patients.”

Dr. Redfield

Although being a female can offer protection against some CVD risks, the atherosclerotic cardiovascular disease (ASCVD) 10-year risk score calculator recommended by the American College of Cardiology doesn’t include chronic inflammatory diseases associated with increased CVD risk, including AILD.

Dr. Redfield and colleagues conducted a multicenter, retrospective cohort study of patients with AIH, PBC, and PSC from 1999-2019. Using TriNetX data, the researchers looked at women with AILD who also had diabetes mellitus, hypertension, and hyperlipidemia, as well as a control group of men and women with these same disorders, excluding those who used biologics, immune modulators, and steroids or had other autoimmune disorders.

The research team used 1:1 propensity-score matching for women in the study group and in the control group based on age, race, ethnicity, ASCVD risk factors, and tobacco use. Women in the study group and men in the control group were matched for age, race, ethnicity, and tobacco use.

The primary outcome was summative cardiovascular risk, including unstable angina, acute myocardial infarction, presence of coronary angioplasty implant, coronary artery bypass, percutaneous coronary intervention, and cerebral infarction.

Overall, women with AIH had a significantly higher cardiovascular risk compared to women without AIH, at 25.4% versus 20.6% (P = .0007).

Specifically, women with PBC had a significantly higher cardiovascular risk compared to women without PBC, at 27.05% versus 20.9% (P < .0001).

There wasn’t a significant difference in risk between women with and without PSC, at 27.5% versus 21.8% (P = .27).

When compared to men without disease, women with AIH didn’t have a statistically significant higher risk, at 25.3% versus 24.2% (P = .44). Similarly, there didn’t appear to be a significant difference between women with PBC and men without PBC, at 26.9% versus 25.9% (P = .52), or between women with PSC and men without PSC, at 27.7% versus 26.2% (P = .78).

Dr. Redfield and colleagues then compared the ASCVD-calculated risk versus database risk, finding that in each group of women with AILD — including AIH, PBC, and PSC — the ASCVD-calculated risk was around 11%, compared with database risk scores of 25% for AIH, 27% for PBC, and 28% for PSC. These database risks appeared similar to both the ASCVD and database risk percentages for men.

“So potentially there’s an oversight in women with any kind of inflammatory disease, but specifically here, autoimmune liver diseases,” she said. “We really need to enhance our risk assessment strategies to take into account their risk and optimize patient outcomes.”

Dr. Redfield noted the limitations with using TriNetX data, including coding consistency among providers and healthcare organizations, unknown patient follow-up dates, and the inability to capture various inflammatory disease phenotypes, such as autoimmune hepatitis with multiple flares, which may be associated with higher cardiovascular risks.

As an attendee of the DDW session, Kenneth Kelson, MD, a gastroenterologist with Fremont Medical Group and Washington Hospital Healthcare System in Fremont, California, noted the importance of investigating the effects of different types of statins in these patients. Although the research team looked at top-level differences among statin users, finding that women with AILD were more likely to be on a statin, they didn’t incorporate statin therapy in the propensity-score matching model.

“Lipid-soluble statins are known to cause more liver trouble, even though it’s pretty low,” Dr. Kelson said. “Whereas the water-soluble statins have a lower incidence of liver issues.”

Dr. Redfield and Dr. Kelson reported no relevant disclosures.