Federal Practitioner

TOPLINE:

Low-dose aspirin use is associated with a reduced risk for colorectal cancer (CRC), confirms a large-scale cohort study, which also suggests that the risk reduction is greatest for metastatic disease and in individuals who take the drug for at least 5 years.

METHODOLOGY:

• Researchers used several population-based registries to identify individuals aged ≥ 50 years living in Norway between 2014 and 2018, excluding those with a prior history of invasive cancer or who had lived in Norway for less than 6 months before study commencement.
• Sociodemographic information was obtained, as well as low-dose aspirin prescription data to determine the prescription date, number of dispensed packages, and defined daily dose.
• Follow-up began 6 months after entering the cohort and continued until CRC diagnosis, another cancer diagnosis, death, emigration, or the end of follow-up on December 31, 2018.
• CRC cases were categorized by site as well as by clinical stage.

TAKEAWAY:

• Of 2,186,390 individuals included, 38,577 (1.8%) were diagnosed with CRC after a median follow-up of 10.9 years. Low-dose aspirin was used at least once by 579,196 (26.5%) individuals.
• Low-dose aspirin use was more common among males, older individuals, those with a lower education or lower income, those of Norwegian origin, and individuals using other medications, including those targeting cardiovascular conditions.
• Compared with never-use, current aspirin use was associated with a lower CRC risk (hazard ratio [HR], 0.87), an association that was more pronounced for metastatic CRC (HR, 0.79) than for regionally advanced (HR, 0.89) and localized disease (HR, 0.93).
• Duration of current aspirin use was also associated with the degree of CRC risk, at HRs of 0.91 for < 3 years, 0.85 for ≥ 3 and < 5 years, and 0.84 for ≥ 5 years.
• It was estimated that aspirin use averted 1073 cases of CRC over the study period.

IN PRACTICE:

“We believe that new randomized controlled trials are urgently needed to confirm the potential protective effect of aspirin against CRC and to identify subgroups in the population who might benefit the most from the use of aspirin,” the authors wrote.

SOURCE:

The research, led by Edoardo Botteri, PhD, Department of Research, Cancer Registry of Norway, National Institute of Public Health, Oslo, Norway, was published online in The American Journal of Gastroenterology.

LIMITATIONS:

This study is limited by its observational nature. Users and nonusers are also “incomparable,” as aspirin is used for the primary prevention of cardiovascular events. Moreover, information was lacking in the registries about “several known risk factors for CRC,” and so the link between aspirin and CRC risk could have been over- or underestimated. Finally, the defined daily dose may not necessarily reflect the dose actually taken by the individual or how often it was taken.

DISCLOSURES:

No relevant financial relationships were declared. The study was funded by the Norwegian Research Council.
 

A version of this article appeared on Medscape.com.

TOPLINE:

Low-dose aspirin use is associated with a reduced risk for colorectal cancer (CRC), confirms a large-scale cohort study, which also suggests that the risk reduction is greatest for metastatic disease and in individuals who take the drug for at least 5 years.

METHODOLOGY:

• Researchers used several population-based registries to identify individuals aged ≥ 50 years living in Norway between 2014 and 2018, excluding those with a prior history of invasive cancer or who had lived in Norway for less than 6 months before study commencement.
• Sociodemographic information was obtained, as well as low-dose aspirin prescription data to determine the prescription date, number of dispensed packages, and defined daily dose.
• Follow-up began 6 months after entering the cohort and continued until CRC diagnosis, another cancer diagnosis, death, emigration, or the end of follow-up on December 31, 2018.
• CRC cases were categorized by site as well as by clinical stage.

TAKEAWAY:

• Of 2,186,390 individuals included, 38,577 (1.8%) were diagnosed with CRC after a median follow-up of 10.9 years. Low-dose aspirin was used at least once by 579,196 (26.5%) individuals.
• Low-dose aspirin use was more common among males, older individuals, those with a lower education or lower income, those of Norwegian origin, and individuals using other medications, including those targeting cardiovascular conditions.
• Compared with never-use, current aspirin use was associated with a lower CRC risk (hazard ratio [HR], 0.87), an association that was more pronounced for metastatic CRC (HR, 0.79) than for regionally advanced (HR, 0.89) and localized disease (HR, 0.93).
• Duration of current aspirin use was also associated with the degree of CRC risk, at HRs of 0.91 for < 3 years, 0.85 for ≥ 3 and < 5 years, and 0.84 for ≥ 5 years.
• It was estimated that aspirin use averted 1073 cases of CRC over the study period.

IN PRACTICE:

“We believe that new randomized controlled trials are urgently needed to confirm the potential protective effect of aspirin against CRC and to identify subgroups in the population who might benefit the most from the use of aspirin,” the authors wrote.

SOURCE:

The research, led by Edoardo Botteri, PhD, Department of Research, Cancer Registry of Norway, National Institute of Public Health, Oslo, Norway, was published online in The American Journal of Gastroenterology.

LIMITATIONS:

This study is limited by its observational nature. Users and nonusers are also “incomparable,” as aspirin is used for the primary prevention of cardiovascular events. Moreover, information was lacking in the registries about “several known risk factors for CRC,” and so the link between aspirin and CRC risk could have been over- or underestimated. Finally, the defined daily dose may not necessarily reflect the dose actually taken by the individual or how often it was taken.

DISCLOSURES:

No relevant financial relationships were declared. The study was funded by the Norwegian Research Council.
 

A version of this article appeared on Medscape.com.

TOPLINE:

Low-dose aspirin use is associated with a reduced risk for colorectal cancer (CRC), confirms a large-scale cohort study, which also suggests that the risk reduction is greatest for metastatic disease and in individuals who take the drug for at least 5 years.

METHODOLOGY:

• Researchers used several population-based registries to identify individuals aged ≥ 50 years living in Norway between 2014 and 2018, excluding those with a prior history of invasive cancer or who had lived in Norway for less than 6 months before study commencement.
• Sociodemographic information was obtained, as well as low-dose aspirin prescription data to determine the prescription date, number of dispensed packages, and defined daily dose.
• Follow-up began 6 months after entering the cohort and continued until CRC diagnosis, another cancer diagnosis, death, emigration, or the end of follow-up on December 31, 2018.
• CRC cases were categorized by site as well as by clinical stage.

TAKEAWAY:

• Of 2,186,390 individuals included, 38,577 (1.8%) were diagnosed with CRC after a median follow-up of 10.9 years. Low-dose aspirin was used at least once by 579,196 (26.5%) individuals.
• Low-dose aspirin use was more common among males, older individuals, those with a lower education or lower income, those of Norwegian origin, and individuals using other medications, including those targeting cardiovascular conditions.
• Compared with never-use, current aspirin use was associated with a lower CRC risk (hazard ratio [HR], 0.87), an association that was more pronounced for metastatic CRC (HR, 0.79) than for regionally advanced (HR, 0.89) and localized disease (HR, 0.93).
• Duration of current aspirin use was also associated with the degree of CRC risk, at HRs of 0.91 for < 3 years, 0.85 for ≥ 3 and < 5 years, and 0.84 for ≥ 5 years.
• It was estimated that aspirin use averted 1073 cases of CRC over the study period.

IN PRACTICE:

“We believe that new randomized controlled trials are urgently needed to confirm the potential protective effect of aspirin against CRC and to identify subgroups in the population who might benefit the most from the use of aspirin,” the authors wrote.

SOURCE:

The research, led by Edoardo Botteri, PhD, Department of Research, Cancer Registry of Norway, National Institute of Public Health, Oslo, Norway, was published online in The American Journal of Gastroenterology.

LIMITATIONS:

This study is limited by its observational nature. Users and nonusers are also “incomparable,” as aspirin is used for the primary prevention of cardiovascular events. Moreover, information was lacking in the registries about “several known risk factors for CRC,” and so the link between aspirin and CRC risk could have been over- or underestimated. Finally, the defined daily dose may not necessarily reflect the dose actually taken by the individual or how often it was taken.

DISCLOSURES:

No relevant financial relationships were declared. The study was funded by the Norwegian Research Council.
 

A version of this article appeared on Medscape.com.

Long-term adherence to a plant-based diet was not tied to a greater risk of hip fracture and some plant-based regimens may actually reduce the risk, a large cohort study of postmenopausal women in the United States suggested.

Not all plant-centered regimens are healthful, however, and this study factored dietary quality into risk.

Writing in JAMA Network Open, the study authors compared the lowest to highest quintiles of Plant-Based Diet Index scores. They found the most recent intake of a healthy plant-based diet (hPDI) to be associated with a somewhat lower (21%) risk of fracture while the most recent intake of its unhealthy counterpart (uPDI) was linked to a somewhat higher (28%) risk.

“In addition, higher baseline scores in the uPDI were associated with higher risk of hip fracture,” wrote the researchers, led by Mercedes Sotos Prieto, PhD, a nutritional epidemiologist in the Department of Preventive Medicine and Public Health at the Autonomous University of Madrid.

Plant-based diets, characterized by higher consumption of plant foods and lower or no intake of animal foods, have raised concerns about their potential harm to bone health. In a recent meta-analysis, vegetarians, but particularly vegans with no consumption of any animal food, had a higher fracture risk and lower bone mineral density compared with omnivores.

Another study found that compared with meat eaters, fish eaters and vegetarians had a higher risk of hip fractures. These analyses, however, did not assess the quality of the plant-based diets.

Courtesy Dr. Sotos Prieto

“We hypothesized that the differences in the quality of the plant-based diets — whole grains, fruits, and vegetables vs refined carbohydrates or snacks, which are both plant-based but very different, would be important in the association for the risk of hip fracture,” Dr. Sotos Prieto said in an interview.
 

Study details

Her study drew on data from 70,285 postmenopausal White women who were in the US Nurses’ Health Study from 1984 through 2014; data were analyzed from Jan. 1 to July 31, 2023.

The mean age of the nurses was 54.92 years, and 2038 cases of hip fracture were reported during the study over as long as 30 years of follow-up.

Healthy plant foods included whole grains, fruits, vegetables, nuts, legumes, vegetable oils, and tea or coffee and received positive scores, whereas less healthy plant foods such as fruit juices, sweetened beverages, refined grains, potatoes, sweets, or desserts and animal foods received reversed scores. Dietary and lifestyle information was collected by self-reported questionnaires.

Individuals with higher hPDI scores were leaner, more physically active, less likely to be smokers, and more likely to use vitamin and calcium supplements. Not surprisingly, they also had higher intakes of dietary calcium and healthy plant foods and had lower intake of less healthy plant foods. “It’s plausible that reverse causation may account for the risk associations, as individuals with underlying health conditions that predisposed them to higher fracture risk may have changed their diet,” Dr. Sotos Prieto said. “In addition, baseline diet may reflect diet early on, which could be an important predictor of bone mineral density when there was more active bone turnover.”

Lack of information precluded adjustment for the use of anti-osteoporotic medication.

Neither the hPDI, with a hazard ratio (HR) for highest vs lowest quintile of 0.97 (95% confidence interval, 0.83-1.14) nor the uPDI, with an HR for highest vs lowest quintile of 1.02 (95% CI, 0.87-1.20) for diet adherence over the long term was associated with hip fracture risk.

For recent dietary intake in the highest vs lowest quintiles, however, the hPDI was associated with a 21% lower risk of hip fracture: HR, 0.79 (95% CI, 0.68-0.92; P = .02 for trend). In contrast, the uPDI was associated with a 28% higher risk: HR, 1.28 (95% CI, 1.09-1.51; P = .008 for trend).

Future studies in other populations are needed to confirm the results and enhance their generalizability, Dr. Sotos Prieto said. “Investigating the temporal dynamics of dietary patterns and their effects by examining how recent dietary changes may impact health outcomes over different timeframes is important.” In the meantime, people wishing to follow a plant-based diet should make sure it features high-quality foods.

This work was supported by Instituto de Salud Carlos III, State Secretary of Research, Development and Innovation of Spain, and the European Research Funds and European Social Fund, the Agencia Estatal de Investigación, the National Institutes of Health, and a Ramón y Cajal contract from the Ministry of Science, Innovation, and Universities. A coauthor reported a patent pending. No other disclosures were reported.

Long-term adherence to a plant-based diet was not tied to a greater risk of hip fracture and some plant-based regimens may actually reduce the risk, a large cohort study of postmenopausal women in the United States suggested.

Not all plant-centered regimens are healthful, however, and this study factored dietary quality into risk.

Writing in JAMA Network Open, the study authors compared the lowest to highest quintiles of Plant-Based Diet Index scores. They found the most recent intake of a healthy plant-based diet (hPDI) to be associated with a somewhat lower (21%) risk of fracture while the most recent intake of its unhealthy counterpart (uPDI) was linked to a somewhat higher (28%) risk.

“In addition, higher baseline scores in the uPDI were associated with higher risk of hip fracture,” wrote the researchers, led by Mercedes Sotos Prieto, PhD, a nutritional epidemiologist in the Department of Preventive Medicine and Public Health at the Autonomous University of Madrid.

Plant-based diets, characterized by higher consumption of plant foods and lower or no intake of animal foods, have raised concerns about their potential harm to bone health. In a recent meta-analysis, vegetarians, but particularly vegans with no consumption of any animal food, had a higher fracture risk and lower bone mineral density compared with omnivores.

Another study found that compared with meat eaters, fish eaters and vegetarians had a higher risk of hip fractures. These analyses, however, did not assess the quality of the plant-based diets.

Courtesy Dr. Sotos Prieto

“We hypothesized that the differences in the quality of the plant-based diets — whole grains, fruits, and vegetables vs refined carbohydrates or snacks, which are both plant-based but very different, would be important in the association for the risk of hip fracture,” Dr. Sotos Prieto said in an interview.
 

Study details

Her study drew on data from 70,285 postmenopausal White women who were in the US Nurses’ Health Study from 1984 through 2014; data were analyzed from Jan. 1 to July 31, 2023.

The mean age of the nurses was 54.92 years, and 2038 cases of hip fracture were reported during the study over as long as 30 years of follow-up.

Healthy plant foods included whole grains, fruits, vegetables, nuts, legumes, vegetable oils, and tea or coffee and received positive scores, whereas less healthy plant foods such as fruit juices, sweetened beverages, refined grains, potatoes, sweets, or desserts and animal foods received reversed scores. Dietary and lifestyle information was collected by self-reported questionnaires.

Individuals with higher hPDI scores were leaner, more physically active, less likely to be smokers, and more likely to use vitamin and calcium supplements. Not surprisingly, they also had higher intakes of dietary calcium and healthy plant foods and had lower intake of less healthy plant foods. “It’s plausible that reverse causation may account for the risk associations, as individuals with underlying health conditions that predisposed them to higher fracture risk may have changed their diet,” Dr. Sotos Prieto said. “In addition, baseline diet may reflect diet early on, which could be an important predictor of bone mineral density when there was more active bone turnover.”

Lack of information precluded adjustment for the use of anti-osteoporotic medication.

Neither the hPDI, with a hazard ratio (HR) for highest vs lowest quintile of 0.97 (95% confidence interval, 0.83-1.14) nor the uPDI, with an HR for highest vs lowest quintile of 1.02 (95% CI, 0.87-1.20) for diet adherence over the long term was associated with hip fracture risk.

For recent dietary intake in the highest vs lowest quintiles, however, the hPDI was associated with a 21% lower risk of hip fracture: HR, 0.79 (95% CI, 0.68-0.92; P = .02 for trend). In contrast, the uPDI was associated with a 28% higher risk: HR, 1.28 (95% CI, 1.09-1.51; P = .008 for trend).

Future studies in other populations are needed to confirm the results and enhance their generalizability, Dr. Sotos Prieto said. “Investigating the temporal dynamics of dietary patterns and their effects by examining how recent dietary changes may impact health outcomes over different timeframes is important.” In the meantime, people wishing to follow a plant-based diet should make sure it features high-quality foods.

This work was supported by Instituto de Salud Carlos III, State Secretary of Research, Development and Innovation of Spain, and the European Research Funds and European Social Fund, the Agencia Estatal de Investigación, the National Institutes of Health, and a Ramón y Cajal contract from the Ministry of Science, Innovation, and Universities. A coauthor reported a patent pending. No other disclosures were reported.

Long-term adherence to a plant-based diet was not tied to a greater risk of hip fracture and some plant-based regimens may actually reduce the risk, a large cohort study of postmenopausal women in the United States suggested.

Not all plant-centered regimens are healthful, however, and this study factored dietary quality into risk.

Writing in JAMA Network Open, the study authors compared the lowest to highest quintiles of Plant-Based Diet Index scores. They found the most recent intake of a healthy plant-based diet (hPDI) to be associated with a somewhat lower (21%) risk of fracture while the most recent intake of its unhealthy counterpart (uPDI) was linked to a somewhat higher (28%) risk.

“In addition, higher baseline scores in the uPDI were associated with higher risk of hip fracture,” wrote the researchers, led by Mercedes Sotos Prieto, PhD, a nutritional epidemiologist in the Department of Preventive Medicine and Public Health at the Autonomous University of Madrid.

Plant-based diets, characterized by higher consumption of plant foods and lower or no intake of animal foods, have raised concerns about their potential harm to bone health. In a recent meta-analysis, vegetarians, but particularly vegans with no consumption of any animal food, had a higher fracture risk and lower bone mineral density compared with omnivores.

Another study found that compared with meat eaters, fish eaters and vegetarians had a higher risk of hip fractures. These analyses, however, did not assess the quality of the plant-based diets.

Courtesy Dr. Sotos Prieto

“We hypothesized that the differences in the quality of the plant-based diets — whole grains, fruits, and vegetables vs refined carbohydrates or snacks, which are both plant-based but very different, would be important in the association for the risk of hip fracture,” Dr. Sotos Prieto said in an interview.
 

Study details

Her study drew on data from 70,285 postmenopausal White women who were in the US Nurses’ Health Study from 1984 through 2014; data were analyzed from Jan. 1 to July 31, 2023.

The mean age of the nurses was 54.92 years, and 2038 cases of hip fracture were reported during the study over as long as 30 years of follow-up.

Healthy plant foods included whole grains, fruits, vegetables, nuts, legumes, vegetable oils, and tea or coffee and received positive scores, whereas less healthy plant foods such as fruit juices, sweetened beverages, refined grains, potatoes, sweets, or desserts and animal foods received reversed scores. Dietary and lifestyle information was collected by self-reported questionnaires.

Individuals with higher hPDI scores were leaner, more physically active, less likely to be smokers, and more likely to use vitamin and calcium supplements. Not surprisingly, they also had higher intakes of dietary calcium and healthy plant foods and had lower intake of less healthy plant foods. “It’s plausible that reverse causation may account for the risk associations, as individuals with underlying health conditions that predisposed them to higher fracture risk may have changed their diet,” Dr. Sotos Prieto said. “In addition, baseline diet may reflect diet early on, which could be an important predictor of bone mineral density when there was more active bone turnover.”

Lack of information precluded adjustment for the use of anti-osteoporotic medication.

Neither the hPDI, with a hazard ratio (HR) for highest vs lowest quintile of 0.97 (95% confidence interval, 0.83-1.14) nor the uPDI, with an HR for highest vs lowest quintile of 1.02 (95% CI, 0.87-1.20) for diet adherence over the long term was associated with hip fracture risk.

For recent dietary intake in the highest vs lowest quintiles, however, the hPDI was associated with a 21% lower risk of hip fracture: HR, 0.79 (95% CI, 0.68-0.92; P = .02 for trend). In contrast, the uPDI was associated with a 28% higher risk: HR, 1.28 (95% CI, 1.09-1.51; P = .008 for trend).

Future studies in other populations are needed to confirm the results and enhance their generalizability, Dr. Sotos Prieto said. “Investigating the temporal dynamics of dietary patterns and their effects by examining how recent dietary changes may impact health outcomes over different timeframes is important.” In the meantime, people wishing to follow a plant-based diet should make sure it features high-quality foods.

This work was supported by Instituto de Salud Carlos III, State Secretary of Research, Development and Innovation of Spain, and the European Research Funds and European Social Fund, the Agencia Estatal de Investigación, the National Institutes of Health, and a Ramón y Cajal contract from the Ministry of Science, Innovation, and Universities. A coauthor reported a patent pending. No other disclosures were reported.

This transcript has been edited for clarity.

If you’re an epidemiologist trying to explore whether some exposure is a risk factor for a disease, you can run into a tough problem when your exposure of interest is highly correlated with another risk factor for the disease. For decades, this stymied investigations into the link, if any, between marijuana use and cardiovascular disease because, for decades, most people who used marijuana in some way also smoked cigarettes — which is a very clear risk factor for heart disease.
 

But the times they are a-changing.

Thanks to the legalization of marijuana for recreational use in many states, and even broader social trends, there is now a large population of people who use marijuana but do not use cigarettes. That means we can start to determine whether marijuana use is an independent risk factor for heart disease.

And this week, we have the largest study yet to attempt to answer that question, though, as I’ll explain momentarily, the smoke hasn’t entirely cleared yet.

The centerpiece of the study we are discussing this week, “Association of Cannabis Use With Cardiovascular Outcomes Among US Adults,” which appeared in the Journal of the American Heart Association, is the Behavioral Risk Factor Surveillance System, an annual telephone survey conducted by the Centers for Disease Control and Prevention since 1984 that gathers data on all sorts of stuff that we do to ourselves: our drinking habits, our smoking habits, and, more recently, our marijuana habits.

The paper combines annual data from 2016 to 2020 representing 27 states and two US territories for a total sample size of more than 430,000 individuals. The key exposure? Marijuana use, which was coded as the number of days of marijuana use in the past 30 days. The key outcome? Coronary heart disease, collected through questions such as “Has a doctor, nurse, or other health professional ever told you that you had a heart attack?”

Right away you might detect a couple of problems here. But let me show you the results before we worry about what they mean.

You can see the rates of the major cardiovascular outcomes here, stratified by daily use of marijuana, nondaily use, and no use. Broadly speaking, the risk was highest for daily users, lowest for occasional users, and in the middle for non-users.

Courtesy Dr. Wilson

Courtesy Dr. Wilson

Courtesy Dr. Wilson

JAMA

Dr. F. Perry Wilson is associate professor of medicine and public health and director of the Clinical and Translational Research Accelerator at Yale University, New Haven, Connecticut. He has disclosed no relevant financial relationships.

A version of this article appeared on Medscape.com.

This transcript has been edited for clarity.

If you’re an epidemiologist trying to explore whether some exposure is a risk factor for a disease, you can run into a tough problem when your exposure of interest is highly correlated with another risk factor for the disease. For decades, this stymied investigations into the link, if any, between marijuana use and cardiovascular disease because, for decades, most people who used marijuana in some way also smoked cigarettes — which is a very clear risk factor for heart disease.
 

But the times they are a-changing.

Thanks to the legalization of marijuana for recreational use in many states, and even broader social trends, there is now a large population of people who use marijuana but do not use cigarettes. That means we can start to determine whether marijuana use is an independent risk factor for heart disease.

And this week, we have the largest study yet to attempt to answer that question, though, as I’ll explain momentarily, the smoke hasn’t entirely cleared yet.

The centerpiece of the study we are discussing this week, “Association of Cannabis Use With Cardiovascular Outcomes Among US Adults,” which appeared in the Journal of the American Heart Association, is the Behavioral Risk Factor Surveillance System, an annual telephone survey conducted by the Centers for Disease Control and Prevention since 1984 that gathers data on all sorts of stuff that we do to ourselves: our drinking habits, our smoking habits, and, more recently, our marijuana habits.

The paper combines annual data from 2016 to 2020 representing 27 states and two US territories for a total sample size of more than 430,000 individuals. The key exposure? Marijuana use, which was coded as the number of days of marijuana use in the past 30 days. The key outcome? Coronary heart disease, collected through questions such as “Has a doctor, nurse, or other health professional ever told you that you had a heart attack?”

Right away you might detect a couple of problems here. But let me show you the results before we worry about what they mean.

You can see the rates of the major cardiovascular outcomes here, stratified by daily use of marijuana, nondaily use, and no use. Broadly speaking, the risk was highest for daily users, lowest for occasional users, and in the middle for non-users.

Courtesy Dr. Wilson

Courtesy Dr. Wilson

Courtesy Dr. Wilson

JAMA

Dr. F. Perry Wilson is associate professor of medicine and public health and director of the Clinical and Translational Research Accelerator at Yale University, New Haven, Connecticut. He has disclosed no relevant financial relationships.

A version of this article appeared on Medscape.com.

This transcript has been edited for clarity.

If you’re an epidemiologist trying to explore whether some exposure is a risk factor for a disease, you can run into a tough problem when your exposure of interest is highly correlated with another risk factor for the disease. For decades, this stymied investigations into the link, if any, between marijuana use and cardiovascular disease because, for decades, most people who used marijuana in some way also smoked cigarettes — which is a very clear risk factor for heart disease.
 

But the times they are a-changing.

Thanks to the legalization of marijuana for recreational use in many states, and even broader social trends, there is now a large population of people who use marijuana but do not use cigarettes. That means we can start to determine whether marijuana use is an independent risk factor for heart disease.

And this week, we have the largest study yet to attempt to answer that question, though, as I’ll explain momentarily, the smoke hasn’t entirely cleared yet.

The centerpiece of the study we are discussing this week, “Association of Cannabis Use With Cardiovascular Outcomes Among US Adults,” which appeared in the Journal of the American Heart Association, is the Behavioral Risk Factor Surveillance System, an annual telephone survey conducted by the Centers for Disease Control and Prevention since 1984 that gathers data on all sorts of stuff that we do to ourselves: our drinking habits, our smoking habits, and, more recently, our marijuana habits.

The paper combines annual data from 2016 to 2020 representing 27 states and two US territories for a total sample size of more than 430,000 individuals. The key exposure? Marijuana use, which was coded as the number of days of marijuana use in the past 30 days. The key outcome? Coronary heart disease, collected through questions such as “Has a doctor, nurse, or other health professional ever told you that you had a heart attack?”

Right away you might detect a couple of problems here. But let me show you the results before we worry about what they mean.

You can see the rates of the major cardiovascular outcomes here, stratified by daily use of marijuana, nondaily use, and no use. Broadly speaking, the risk was highest for daily users, lowest for occasional users, and in the middle for non-users.

Courtesy Dr. Wilson

Courtesy Dr. Wilson

Courtesy Dr. Wilson

JAMA

Dr. F. Perry Wilson is associate professor of medicine and public health and director of the Clinical and Translational Research Accelerator at Yale University, New Haven, Connecticut. He has disclosed no relevant financial relationships.

A version of this article appeared on Medscape.com.

TOPLINE:

Galantamine purchased as a dietary supplement may be more likely to contain bacterial contaminants and an incorrect amount of the product vs when it is prescribed as a generic drug, new research showed.

METHODOLOGY:

• Galantamine, a plant alkaloid, is approved for treating mild to moderate Alzheimer’s dementia but is also marketed as a dietary supplement for cognitive enhancement.
• In June 2023, researchers purchased all 10 galantamine dietary supplements available on Amazon.com that had a Supplement Facts panel.
• In September 2023, they acquired all 11 generic immediate-release formulations of prescription galantamine available in the United States.
• They analyzed the content of galantamine in each product using ultrahigh-performance liquid chromatography-mass spectrometry and quantified any microorganisms present.

TAKEAWAY:

• Generic galantamine drugs were found to contain 97.5%-104.2% of the labeled content, with no microbial contamination.
• Galantamine dietary supplements, however, showed a wide variance in content, ranging from less than 2% to 110% of the labeled amount, and 30% were contaminated with Bacillus cereus sensu stricto. The amount of bacteria present would not have been expected to harm consumers, according to the authors of the study.

IN PRACTICE:

“Clinicians should query patients with memory concerns about the use of dietary supplements and advise patients not to use galantamine supplements,” the researchers wrote.

SOURCE:

The corresponding author of the study was Pieter A. Cohen, MD, with Broadway Clinic, Cambridge Health Alliance, in Somerville, Massachusetts. The paper was published online as a research letter in JAMA.

LIMITATIONS:

The products were purchased at a single point in time and may not reflect current options, the researchers noted. The generalizability of the findings to other supplement ingredients or generic drugs is unknown.

DISCLOSURES:

Dr. Cohen has received grants from the Consumers Union and PEW Charitable Trust and personal fees from UpToDate and the Centers for Disease Control and Prevention. He has been sued by a supplement company in a case where the jury found in his favor.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.

A version of this article appeared on Medscape.com.

TOPLINE:

Galantamine purchased as a dietary supplement may be more likely to contain bacterial contaminants and an incorrect amount of the product vs when it is prescribed as a generic drug, new research showed.

METHODOLOGY:

• Galantamine, a plant alkaloid, is approved for treating mild to moderate Alzheimer’s dementia but is also marketed as a dietary supplement for cognitive enhancement.
• In June 2023, researchers purchased all 10 galantamine dietary supplements available on Amazon.com that had a Supplement Facts panel.
• In September 2023, they acquired all 11 generic immediate-release formulations of prescription galantamine available in the United States.
• They analyzed the content of galantamine in each product using ultrahigh-performance liquid chromatography-mass spectrometry and quantified any microorganisms present.

TAKEAWAY:

• Generic galantamine drugs were found to contain 97.5%-104.2% of the labeled content, with no microbial contamination.
• Galantamine dietary supplements, however, showed a wide variance in content, ranging from less than 2% to 110% of the labeled amount, and 30% were contaminated with Bacillus cereus sensu stricto. The amount of bacteria present would not have been expected to harm consumers, according to the authors of the study.

IN PRACTICE:

“Clinicians should query patients with memory concerns about the use of dietary supplements and advise patients not to use galantamine supplements,” the researchers wrote.

SOURCE:

The corresponding author of the study was Pieter A. Cohen, MD, with Broadway Clinic, Cambridge Health Alliance, in Somerville, Massachusetts. The paper was published online as a research letter in JAMA.

LIMITATIONS:

The products were purchased at a single point in time and may not reflect current options, the researchers noted. The generalizability of the findings to other supplement ingredients or generic drugs is unknown.

DISCLOSURES:

Dr. Cohen has received grants from the Consumers Union and PEW Charitable Trust and personal fees from UpToDate and the Centers for Disease Control and Prevention. He has been sued by a supplement company in a case where the jury found in his favor.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.

A version of this article appeared on Medscape.com.

TOPLINE:

Galantamine purchased as a dietary supplement may be more likely to contain bacterial contaminants and an incorrect amount of the product vs when it is prescribed as a generic drug, new research showed.

METHODOLOGY:

• Galantamine, a plant alkaloid, is approved for treating mild to moderate Alzheimer’s dementia but is also marketed as a dietary supplement for cognitive enhancement.
• In June 2023, researchers purchased all 10 galantamine dietary supplements available on Amazon.com that had a Supplement Facts panel.
• In September 2023, they acquired all 11 generic immediate-release formulations of prescription galantamine available in the United States.
• They analyzed the content of galantamine in each product using ultrahigh-performance liquid chromatography-mass spectrometry and quantified any microorganisms present.

TAKEAWAY:

• Generic galantamine drugs were found to contain 97.5%-104.2% of the labeled content, with no microbial contamination.
• Galantamine dietary supplements, however, showed a wide variance in content, ranging from less than 2% to 110% of the labeled amount, and 30% were contaminated with Bacillus cereus sensu stricto. The amount of bacteria present would not have been expected to harm consumers, according to the authors of the study.

IN PRACTICE:

“Clinicians should query patients with memory concerns about the use of dietary supplements and advise patients not to use galantamine supplements,” the researchers wrote.

SOURCE:

The corresponding author of the study was Pieter A. Cohen, MD, with Broadway Clinic, Cambridge Health Alliance, in Somerville, Massachusetts. The paper was published online as a research letter in JAMA.

LIMITATIONS:

The products were purchased at a single point in time and may not reflect current options, the researchers noted. The generalizability of the findings to other supplement ingredients or generic drugs is unknown.

DISCLOSURES:

Dr. Cohen has received grants from the Consumers Union and PEW Charitable Trust and personal fees from UpToDate and the Centers for Disease Control and Prevention. He has been sued by a supplement company in a case where the jury found in his favor.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.

A version of this article appeared on Medscape.com.

Will the new US Department of Veterans Affairs (VA) pharmacy software be safe and effective? That was the topic when David Case, the VA Deputy Inspector General, spoke in the US House of Representatives Veterans Affairs Committee technology modernization subcommittee hearing on February 15.

Questions like that have dogged the project since 2018, when the VA began rolling out the Oracle Cerner electronic health record (EHR) system as the successor to ViSTA.

The Oracle system has been beset by one glitch after another since its arrival. And in that time, Case said, the VA Office of Inspector General (OIG) has been engaging with VA employees at sites in Washington, Oregon, Ohio, Illinois, and other locations where the modernization program has been piloted.

The most recent OIG investigation of pharmacy-related patient safety issues began with a review of an allegation of a prescription backlog at Columbus, Ohio, where the system went live on April 30, 2022. The OIG found that facility leaders took “timely and sustainable steps” to manage that issue. However, other unresolved patient safety issues came to light, such as medication inaccuracies, inaccurate medication data, and insufficient staffing. The OIG also found staff were creating “numerous work arounds” to provide patient care, and that the volume of staff educational materials for pharmacy-related functions was “overwhelming.”

Those problems were just the latest in a long queue. In May 2021, after the first VA deployment of the new EHR at the Mann-Grandstaff VA Medical Center in Spokane, Washington, a pharmacy patient safety team under the VA National Center for Patient Safety (NCPS) also had identified patient safety issues and “multiple” concerns regarding the system’s usability. For example, updates to a patient’s active medication list were not routinely reflected at the patient’s next appointment. Despite knowing about such challenges, Case noted in his report, VA leaders deployed the new EHR at 4 more VA medical centers.

Cerner/ViSTA Communication

One major cause of the current problems is the way the systems “talk” to each other. EHR information is communicated between VHA facilities through channels that include the Joint Longitudinal Viewer (JLV) and the Health Data Repository, which stores patient-specific clinical information from both the legacy and the new EHR systems. The JLV application allows clinicians to access a read only version of a patient’s EHR from both systems.

Every medication used in VHA has a VA Unique Identifier (VUID). When a patient is prescribed a medication at a new EHR site, that medication’s VUID is sent to the Health Data Repository. If that patient seeks care from a legacy health care practitioner (HCP), and that HCP enters a medication order, a software interface accesses the VUID from the Health Data Repository to verify that the medication being prescribed is safe and compatible with the medications and allergies previously documented in the patient’s record.

However, on March 31, 2023, staff from a ViSTA site found an incorrect medication order when prescribing a new medication to a patient who had received care and medications at a new EHR site. This in turn led to the discovery that an error in Oracle software coding had resulted in the “widespread transmission” of incorrect VUIDs from new EHR sites to legacy EHR sites, the OIG found. VA leaders and HCPs were notified of the potential clinical impact and were given specific instructions on how to mitigate the issue. They were asked to “please share widely.”

On top of that, days later, patient safety managers across the Veterans Health Administration (VHA) were told that drug-to-drug interactions, duplicate medication orders, and allergy checks were not functioning as expected, and they too were provided with remedial actions.

Oracle applied a successful software patch on in April 2023, to ensure accurate VUIDs were attached to all mail order pharmacy–processed prescriptions from that date forward. However, the OIG learned the incorrect VUIDs sent from new EHR sites and stored in the Health Data Repository from as far back as October 2020 had not been corrected. Case told the subcommittee that on November 29, 2023, the VHA Pharmacy Council reported withdrawing a request for Oracle to send corrected medication VUID data to the Health Data Repository, on the presumption that remaining inaccurate VUIDs would expire in early April 2024, and the data would be corrected at that time.

The OIG is concerned, Case said, that patient medication data remains inaccurate almost a year after VA learned of the issue. The mail order pharmacy-related data generated from approximately 120,000 patients served by new EHR sites are still incorrect. These patients face an ongoing risk of an adverse medication-related event if they receive care and medications from a VA medical center using the legacy EHR system.

The OIG also learned of other problems associated with transmission of medication and allergy information, which could have consequences such as:

• Patient medications being discontinued or stopped by new HCPs using Cerner that appear in ViSTA as active and current prescriptions;
• Allergy-warning messages not appearing when intended or inappropriately appearing for the wrong medication;
• Duplicate medication order checks not appearing when intended or inappropriately appearing for the wrong drug;
• Patient active medication lists having incomplete or inaccurate information, such as missing prescriptions, duplicate prescriptions, or incorrect medication order statuses.

The OIG warned VHA employees about the risks, although it wasn’t possible to determine who might actually be at risk. A VHA leader told the OIG that all patients who have been prescribed any medications or have medication allergies documented at a at a Cerner site are at risk. That could mean as many as 250,000 patients: As of September 2023, approximately 190,000 patients had a medication prescribed and 126,000 had an allergy documented at a new EHR site.

Case Example

Not surprisingly, “the OIG is not confident in [EHRM-Integration Office] leaders’ oversight and control of the new systems’ Health Data Repository interface programming,” Case said. He cited the case of a patient with posttraumatic stress disorder and traumatic brain injury with adrenal insufficiency. Four days prior to admission, a ViSTA site pharmacist used the EHR to perform a medication reconciliation for the patient. The data available did not include the patient’s most recent prednisone prescription, which had been ordered by an HCP at a facility using Cerner.

A nurse practitioner performed another reconciliation when the patient was admitted to the residential program, but the patient was unsure of all their medications. Because the most recent prednisone prescription was not visible in ViSTA, the prednisone appeared to have been completed at least 3 months prior to admission and was therefore not prescribed in the admission medication orders.

Five days into the residential program, the patient began exhibiting unusual behaviors associated with the lack of prednisone. The patient realized they needed more prednisone, but the nurse explained there was no prednisone on the patient’s medication list. Eventually, the patient found the active prednisone order on their personal cell phone and was transferred to a local emergency department for care.

Work Arounds

The VHA’s efforts to forestall or mitigate system errors have in some cases had a cascade effect. For example, HCPs must essentially back up what the automated software is intended to do, with “complex, time-consuming” multistep manual safety checks when prescribing new medications for patients previously cared for at a Cerner site. The OIG is concerned that this increased vigilance is “unsustainable” by pharmacists and frontline staff and could lead to burnout and medication-related patient safety events. After the new EHR launched, the OIG found, burnout symptoms for pharmacy staff increased. Nonetheless, Case told the committee, OIG staff “have observed [employees’] unwavering commitment to prioritizing the care of patients while mitigating implementation challenges.”

EHR-related workload burdens have necessitated other adjustments. Columbus, for instance, hired 9 full-time clinical pharmacists—a 62% staffing increase—to help reduce the backlog. Pharmacy leaders created approximately 29 additional work-arounds to support pharmacy staff and prevent delays. Facility pharmacy leaders also developed approximately 25 educational materials, such as tip sheets, reference guides, and job aids. The OIG’s concern—apart from the overwhelming amount of information for staff to implement—is that such prophylactic measures may in fact give rise to inconsistent practices, which increase risks to patient safety.

Committed to Working With the VA

Mike Sicilia, executive vice president of Oracle Corporation, told lawmakers in the hearing, “After the initial deployments, it became clear that the pharmacy system needed to be enhanced to better meet VA’s needs. To that end, in August 2022, shortly after Oracle completed its acquisition of Cerner, VA contracted with us for seven enhancements that overall would adapt the pharmacy system to a more bidirectional system between VA providers placing prescription orders and VA pharmacists fulfilling and dispensing them.” Those enhancements are all live for VA providers and pharmacists to use now, he said, except for one that is undergoing additional testing.

He added, “As with any healthcare technology system, there is a need for continuous improvements but that does not mean the system is not safe and effective in its current state. Oracle is committed to working with VA … throughout the reset period to identify workflows and other items that can be simplified or streamlined to improve the overall user and pharmacy experience.”

Standardizing workflows and ensuring training and communications to pharmacists about the latest updates will discourage use of work-arounds, Sicilia said, and “help with improving morale and satisfaction with the system.” During a visit in early February by VA and the Oracle team to the Lovell Federal Health Care Center in North Chicago, “feedback from pharmacists was positive about the training and readiness for using the new pharmacy system.”

The backlog, at least, may be resolved. Sicilia said on average more than 215,000 outpatient prescriptions are being filled each month. “The current live sites do not have a backlog in filling prescriptions. Recent data from this month show that three of the five live sites have zero prescriptions waiting to be processed that are older than seven days. The two other live sites have an average of two prescriptions older than seven days,” he said.

Although Oracle Health has since resolved some of the identified issues, the OIG is concerned that the new EHR will continue to be deployed at medical facilities despite “myriad” as-yet unresolved issues related to inaccurate medication ordering, reconciliation, and dispensing. The VHA has paused Cerner deployments multiple times.

“It is unclear whether identified problems are being adequately resolved before additional deployments,” Case said. “There is also the question of whether there is sufficient transparency and communication among EHRM-IO, VHA and facility leaders, VA leaders, and Oracle Health needed for quality control and critical coordination. Trust in VA is also dependent on patients being fully and quickly advised when issues affecting them are identified and addressed. As VA moves toward its deployment next month at a complex facility jointly operated with the Department of Defense, transparency, communication, and program management will be essential to getting it right. Failures in these areas risk cascading problems.”

Will the new US Department of Veterans Affairs (VA) pharmacy software be safe and effective? That was the topic when David Case, the VA Deputy Inspector General, spoke in the US House of Representatives Veterans Affairs Committee technology modernization subcommittee hearing on February 15.

Questions like that have dogged the project since 2018, when the VA began rolling out the Oracle Cerner electronic health record (EHR) system as the successor to ViSTA.

The Oracle system has been beset by one glitch after another since its arrival. And in that time, Case said, the VA Office of Inspector General (OIG) has been engaging with VA employees at sites in Washington, Oregon, Ohio, Illinois, and other locations where the modernization program has been piloted.

The most recent OIG investigation of pharmacy-related patient safety issues began with a review of an allegation of a prescription backlog at Columbus, Ohio, where the system went live on April 30, 2022. The OIG found that facility leaders took “timely and sustainable steps” to manage that issue. However, other unresolved patient safety issues came to light, such as medication inaccuracies, inaccurate medication data, and insufficient staffing. The OIG also found staff were creating “numerous work arounds” to provide patient care, and that the volume of staff educational materials for pharmacy-related functions was “overwhelming.”

Those problems were just the latest in a long queue. In May 2021, after the first VA deployment of the new EHR at the Mann-Grandstaff VA Medical Center in Spokane, Washington, a pharmacy patient safety team under the VA National Center for Patient Safety (NCPS) also had identified patient safety issues and “multiple” concerns regarding the system’s usability. For example, updates to a patient’s active medication list were not routinely reflected at the patient’s next appointment. Despite knowing about such challenges, Case noted in his report, VA leaders deployed the new EHR at 4 more VA medical centers.

Cerner/ViSTA Communication

One major cause of the current problems is the way the systems “talk” to each other. EHR information is communicated between VHA facilities through channels that include the Joint Longitudinal Viewer (JLV) and the Health Data Repository, which stores patient-specific clinical information from both the legacy and the new EHR systems. The JLV application allows clinicians to access a read only version of a patient’s EHR from both systems.

Every medication used in VHA has a VA Unique Identifier (VUID). When a patient is prescribed a medication at a new EHR site, that medication’s VUID is sent to the Health Data Repository. If that patient seeks care from a legacy health care practitioner (HCP), and that HCP enters a medication order, a software interface accesses the VUID from the Health Data Repository to verify that the medication being prescribed is safe and compatible with the medications and allergies previously documented in the patient’s record.

However, on March 31, 2023, staff from a ViSTA site found an incorrect medication order when prescribing a new medication to a patient who had received care and medications at a new EHR site. This in turn led to the discovery that an error in Oracle software coding had resulted in the “widespread transmission” of incorrect VUIDs from new EHR sites to legacy EHR sites, the OIG found. VA leaders and HCPs were notified of the potential clinical impact and were given specific instructions on how to mitigate the issue. They were asked to “please share widely.”

On top of that, days later, patient safety managers across the Veterans Health Administration (VHA) were told that drug-to-drug interactions, duplicate medication orders, and allergy checks were not functioning as expected, and they too were provided with remedial actions.

Oracle applied a successful software patch on in April 2023, to ensure accurate VUIDs were attached to all mail order pharmacy–processed prescriptions from that date forward. However, the OIG learned the incorrect VUIDs sent from new EHR sites and stored in the Health Data Repository from as far back as October 2020 had not been corrected. Case told the subcommittee that on November 29, 2023, the VHA Pharmacy Council reported withdrawing a request for Oracle to send corrected medication VUID data to the Health Data Repository, on the presumption that remaining inaccurate VUIDs would expire in early April 2024, and the data would be corrected at that time.

The OIG is concerned, Case said, that patient medication data remains inaccurate almost a year after VA learned of the issue. The mail order pharmacy-related data generated from approximately 120,000 patients served by new EHR sites are still incorrect. These patients face an ongoing risk of an adverse medication-related event if they receive care and medications from a VA medical center using the legacy EHR system.

The OIG also learned of other problems associated with transmission of medication and allergy information, which could have consequences such as:

• Patient medications being discontinued or stopped by new HCPs using Cerner that appear in ViSTA as active and current prescriptions;
• Allergy-warning messages not appearing when intended or inappropriately appearing for the wrong medication;
• Duplicate medication order checks not appearing when intended or inappropriately appearing for the wrong drug;
• Patient active medication lists having incomplete or inaccurate information, such as missing prescriptions, duplicate prescriptions, or incorrect medication order statuses.

The OIG warned VHA employees about the risks, although it wasn’t possible to determine who might actually be at risk. A VHA leader told the OIG that all patients who have been prescribed any medications or have medication allergies documented at a at a Cerner site are at risk. That could mean as many as 250,000 patients: As of September 2023, approximately 190,000 patients had a medication prescribed and 126,000 had an allergy documented at a new EHR site.

Case Example

Not surprisingly, “the OIG is not confident in [EHRM-Integration Office] leaders’ oversight and control of the new systems’ Health Data Repository interface programming,” Case said. He cited the case of a patient with posttraumatic stress disorder and traumatic brain injury with adrenal insufficiency. Four days prior to admission, a ViSTA site pharmacist used the EHR to perform a medication reconciliation for the patient. The data available did not include the patient’s most recent prednisone prescription, which had been ordered by an HCP at a facility using Cerner.

A nurse practitioner performed another reconciliation when the patient was admitted to the residential program, but the patient was unsure of all their medications. Because the most recent prednisone prescription was not visible in ViSTA, the prednisone appeared to have been completed at least 3 months prior to admission and was therefore not prescribed in the admission medication orders.

Five days into the residential program, the patient began exhibiting unusual behaviors associated with the lack of prednisone. The patient realized they needed more prednisone, but the nurse explained there was no prednisone on the patient’s medication list. Eventually, the patient found the active prednisone order on their personal cell phone and was transferred to a local emergency department for care.

Work Arounds

The VHA’s efforts to forestall or mitigate system errors have in some cases had a cascade effect. For example, HCPs must essentially back up what the automated software is intended to do, with “complex, time-consuming” multistep manual safety checks when prescribing new medications for patients previously cared for at a Cerner site. The OIG is concerned that this increased vigilance is “unsustainable” by pharmacists and frontline staff and could lead to burnout and medication-related patient safety events. After the new EHR launched, the OIG found, burnout symptoms for pharmacy staff increased. Nonetheless, Case told the committee, OIG staff “have observed [employees’] unwavering commitment to prioritizing the care of patients while mitigating implementation challenges.”

EHR-related workload burdens have necessitated other adjustments. Columbus, for instance, hired 9 full-time clinical pharmacists—a 62% staffing increase—to help reduce the backlog. Pharmacy leaders created approximately 29 additional work-arounds to support pharmacy staff and prevent delays. Facility pharmacy leaders also developed approximately 25 educational materials, such as tip sheets, reference guides, and job aids. The OIG’s concern—apart from the overwhelming amount of information for staff to implement—is that such prophylactic measures may in fact give rise to inconsistent practices, which increase risks to patient safety.

Committed to Working With the VA

Mike Sicilia, executive vice president of Oracle Corporation, told lawmakers in the hearing, “After the initial deployments, it became clear that the pharmacy system needed to be enhanced to better meet VA’s needs. To that end, in August 2022, shortly after Oracle completed its acquisition of Cerner, VA contracted with us for seven enhancements that overall would adapt the pharmacy system to a more bidirectional system between VA providers placing prescription orders and VA pharmacists fulfilling and dispensing them.” Those enhancements are all live for VA providers and pharmacists to use now, he said, except for one that is undergoing additional testing.

He added, “As with any healthcare technology system, there is a need for continuous improvements but that does not mean the system is not safe and effective in its current state. Oracle is committed to working with VA … throughout the reset period to identify workflows and other items that can be simplified or streamlined to improve the overall user and pharmacy experience.”

Standardizing workflows and ensuring training and communications to pharmacists about the latest updates will discourage use of work-arounds, Sicilia said, and “help with improving morale and satisfaction with the system.” During a visit in early February by VA and the Oracle team to the Lovell Federal Health Care Center in North Chicago, “feedback from pharmacists was positive about the training and readiness for using the new pharmacy system.”

The backlog, at least, may be resolved. Sicilia said on average more than 215,000 outpatient prescriptions are being filled each month. “The current live sites do not have a backlog in filling prescriptions. Recent data from this month show that three of the five live sites have zero prescriptions waiting to be processed that are older than seven days. The two other live sites have an average of two prescriptions older than seven days,” he said.

Although Oracle Health has since resolved some of the identified issues, the OIG is concerned that the new EHR will continue to be deployed at medical facilities despite “myriad” as-yet unresolved issues related to inaccurate medication ordering, reconciliation, and dispensing. The VHA has paused Cerner deployments multiple times.

“It is unclear whether identified problems are being adequately resolved before additional deployments,” Case said. “There is also the question of whether there is sufficient transparency and communication among EHRM-IO, VHA and facility leaders, VA leaders, and Oracle Health needed for quality control and critical coordination. Trust in VA is also dependent on patients being fully and quickly advised when issues affecting them are identified and addressed. As VA moves toward its deployment next month at a complex facility jointly operated with the Department of Defense, transparency, communication, and program management will be essential to getting it right. Failures in these areas risk cascading problems.”

Will the new US Department of Veterans Affairs (VA) pharmacy software be safe and effective? That was the topic when David Case, the VA Deputy Inspector General, spoke in the US House of Representatives Veterans Affairs Committee technology modernization subcommittee hearing on February 15.

Questions like that have dogged the project since 2018, when the VA began rolling out the Oracle Cerner electronic health record (EHR) system as the successor to ViSTA.

The Oracle system has been beset by one glitch after another since its arrival. And in that time, Case said, the VA Office of Inspector General (OIG) has been engaging with VA employees at sites in Washington, Oregon, Ohio, Illinois, and other locations where the modernization program has been piloted.

The most recent OIG investigation of pharmacy-related patient safety issues began with a review of an allegation of a prescription backlog at Columbus, Ohio, where the system went live on April 30, 2022. The OIG found that facility leaders took “timely and sustainable steps” to manage that issue. However, other unresolved patient safety issues came to light, such as medication inaccuracies, inaccurate medication data, and insufficient staffing. The OIG also found staff were creating “numerous work arounds” to provide patient care, and that the volume of staff educational materials for pharmacy-related functions was “overwhelming.”

Those problems were just the latest in a long queue. In May 2021, after the first VA deployment of the new EHR at the Mann-Grandstaff VA Medical Center in Spokane, Washington, a pharmacy patient safety team under the VA National Center for Patient Safety (NCPS) also had identified patient safety issues and “multiple” concerns regarding the system’s usability. For example, updates to a patient’s active medication list were not routinely reflected at the patient’s next appointment. Despite knowing about such challenges, Case noted in his report, VA leaders deployed the new EHR at 4 more VA medical centers.

Cerner/ViSTA Communication

One major cause of the current problems is the way the systems “talk” to each other. EHR information is communicated between VHA facilities through channels that include the Joint Longitudinal Viewer (JLV) and the Health Data Repository, which stores patient-specific clinical information from both the legacy and the new EHR systems. The JLV application allows clinicians to access a read only version of a patient’s EHR from both systems.

Every medication used in VHA has a VA Unique Identifier (VUID). When a patient is prescribed a medication at a new EHR site, that medication’s VUID is sent to the Health Data Repository. If that patient seeks care from a legacy health care practitioner (HCP), and that HCP enters a medication order, a software interface accesses the VUID from the Health Data Repository to verify that the medication being prescribed is safe and compatible with the medications and allergies previously documented in the patient’s record.

However, on March 31, 2023, staff from a ViSTA site found an incorrect medication order when prescribing a new medication to a patient who had received care and medications at a new EHR site. This in turn led to the discovery that an error in Oracle software coding had resulted in the “widespread transmission” of incorrect VUIDs from new EHR sites to legacy EHR sites, the OIG found. VA leaders and HCPs were notified of the potential clinical impact and were given specific instructions on how to mitigate the issue. They were asked to “please share widely.”

On top of that, days later, patient safety managers across the Veterans Health Administration (VHA) were told that drug-to-drug interactions, duplicate medication orders, and allergy checks were not functioning as expected, and they too were provided with remedial actions.

Oracle applied a successful software patch on in April 2023, to ensure accurate VUIDs were attached to all mail order pharmacy–processed prescriptions from that date forward. However, the OIG learned the incorrect VUIDs sent from new EHR sites and stored in the Health Data Repository from as far back as October 2020 had not been corrected. Case told the subcommittee that on November 29, 2023, the VHA Pharmacy Council reported withdrawing a request for Oracle to send corrected medication VUID data to the Health Data Repository, on the presumption that remaining inaccurate VUIDs would expire in early April 2024, and the data would be corrected at that time.

The OIG is concerned, Case said, that patient medication data remains inaccurate almost a year after VA learned of the issue. The mail order pharmacy-related data generated from approximately 120,000 patients served by new EHR sites are still incorrect. These patients face an ongoing risk of an adverse medication-related event if they receive care and medications from a VA medical center using the legacy EHR system.

The OIG also learned of other problems associated with transmission of medication and allergy information, which could have consequences such as:

• Patient medications being discontinued or stopped by new HCPs using Cerner that appear in ViSTA as active and current prescriptions;
• Allergy-warning messages not appearing when intended or inappropriately appearing for the wrong medication;
• Duplicate medication order checks not appearing when intended or inappropriately appearing for the wrong drug;
• Patient active medication lists having incomplete or inaccurate information, such as missing prescriptions, duplicate prescriptions, or incorrect medication order statuses.

The OIG warned VHA employees about the risks, although it wasn’t possible to determine who might actually be at risk. A VHA leader told the OIG that all patients who have been prescribed any medications or have medication allergies documented at a at a Cerner site are at risk. That could mean as many as 250,000 patients: As of September 2023, approximately 190,000 patients had a medication prescribed and 126,000 had an allergy documented at a new EHR site.

Case Example

Not surprisingly, “the OIG is not confident in [EHRM-Integration Office] leaders’ oversight and control of the new systems’ Health Data Repository interface programming,” Case said. He cited the case of a patient with posttraumatic stress disorder and traumatic brain injury with adrenal insufficiency. Four days prior to admission, a ViSTA site pharmacist used the EHR to perform a medication reconciliation for the patient. The data available did not include the patient’s most recent prednisone prescription, which had been ordered by an HCP at a facility using Cerner.

A nurse practitioner performed another reconciliation when the patient was admitted to the residential program, but the patient was unsure of all their medications. Because the most recent prednisone prescription was not visible in ViSTA, the prednisone appeared to have been completed at least 3 months prior to admission and was therefore not prescribed in the admission medication orders.

Five days into the residential program, the patient began exhibiting unusual behaviors associated with the lack of prednisone. The patient realized they needed more prednisone, but the nurse explained there was no prednisone on the patient’s medication list. Eventually, the patient found the active prednisone order on their personal cell phone and was transferred to a local emergency department for care.

Work Arounds

The VHA’s efforts to forestall or mitigate system errors have in some cases had a cascade effect. For example, HCPs must essentially back up what the automated software is intended to do, with “complex, time-consuming” multistep manual safety checks when prescribing new medications for patients previously cared for at a Cerner site. The OIG is concerned that this increased vigilance is “unsustainable” by pharmacists and frontline staff and could lead to burnout and medication-related patient safety events. After the new EHR launched, the OIG found, burnout symptoms for pharmacy staff increased. Nonetheless, Case told the committee, OIG staff “have observed [employees’] unwavering commitment to prioritizing the care of patients while mitigating implementation challenges.”

EHR-related workload burdens have necessitated other adjustments. Columbus, for instance, hired 9 full-time clinical pharmacists—a 62% staffing increase—to help reduce the backlog. Pharmacy leaders created approximately 29 additional work-arounds to support pharmacy staff and prevent delays. Facility pharmacy leaders also developed approximately 25 educational materials, such as tip sheets, reference guides, and job aids. The OIG’s concern—apart from the overwhelming amount of information for staff to implement—is that such prophylactic measures may in fact give rise to inconsistent practices, which increase risks to patient safety.

Committed to Working With the VA

Mike Sicilia, executive vice president of Oracle Corporation, told lawmakers in the hearing, “After the initial deployments, it became clear that the pharmacy system needed to be enhanced to better meet VA’s needs. To that end, in August 2022, shortly after Oracle completed its acquisition of Cerner, VA contracted with us for seven enhancements that overall would adapt the pharmacy system to a more bidirectional system between VA providers placing prescription orders and VA pharmacists fulfilling and dispensing them.” Those enhancements are all live for VA providers and pharmacists to use now, he said, except for one that is undergoing additional testing.

He added, “As with any healthcare technology system, there is a need for continuous improvements but that does not mean the system is not safe and effective in its current state. Oracle is committed to working with VA … throughout the reset period to identify workflows and other items that can be simplified or streamlined to improve the overall user and pharmacy experience.”

Standardizing workflows and ensuring training and communications to pharmacists about the latest updates will discourage use of work-arounds, Sicilia said, and “help with improving morale and satisfaction with the system.” During a visit in early February by VA and the Oracle team to the Lovell Federal Health Care Center in North Chicago, “feedback from pharmacists was positive about the training and readiness for using the new pharmacy system.”

The backlog, at least, may be resolved. Sicilia said on average more than 215,000 outpatient prescriptions are being filled each month. “The current live sites do not have a backlog in filling prescriptions. Recent data from this month show that three of the five live sites have zero prescriptions waiting to be processed that are older than seven days. The two other live sites have an average of two prescriptions older than seven days,” he said.

Although Oracle Health has since resolved some of the identified issues, the OIG is concerned that the new EHR will continue to be deployed at medical facilities despite “myriad” as-yet unresolved issues related to inaccurate medication ordering, reconciliation, and dispensing. The VHA has paused Cerner deployments multiple times.

“It is unclear whether identified problems are being adequately resolved before additional deployments,” Case said. “There is also the question of whether there is sufficient transparency and communication among EHRM-IO, VHA and facility leaders, VA leaders, and Oracle Health needed for quality control and critical coordination. Trust in VA is also dependent on patients being fully and quickly advised when issues affecting them are identified and addressed. As VA moves toward its deployment next month at a complex facility jointly operated with the Department of Defense, transparency, communication, and program management will be essential to getting it right. Failures in these areas risk cascading problems.”

For many, stretching is the fitness equivalent of awkward small talk. It’s the opening act, the thing you tolerate because you know it will be over soon. 

Others have challenged the practice, suggesting that stretching isn’t necessary at all. Some research has found that a preworkout stretch may even be disadvantageous, weakening muscles and hindering performance.

To put it plainly, no one seems terribly enthusiastic about touching their toes. 

That’s why a 2020 study on exercise and mortality was such a head-scratcher. The study found that stretching was uniquely associated with a lower risk for all-cause mortality among American adults. That’s after controlling for participation in other types of exercise. 

The finding seemed like a fluke, until a 2023 study found essentially the same thing. 

Among Korean adults, those who did flexibility exercise at least five times a week had a 20% lower risk of dying during the follow-up period than those who didn’t stretch at all. That was slightly better than the risk reduction associated with high volumes of aerobic exercise and resistance training. 

How can that be ? It turns out, stretching is linked to several health benefits that you might not expect.
 

The Surprising Benefits of Stretching

When we talk about stretching, we usually mean static stretching — getting into and holding a position that challenges a muscle, with the goal of improving range of motion around a joint. 

It doesn’t need to be a big challenge. “Research shows you can get increases in flexibility by stretching to the initial point of discomfort,” said David Behm, PhD, an exercise scientist at Memorial University of Newfoundland in Canada who’s published dozens of studies on stretching over the past quarter-century. 

That brings us to the first benefit.
 

Stretching Benefit #1: More Strength

At first glance, flexibility training and strength training have little in common. You lengthen muscles in the former and contract them in the latter. 

But in both cases, Dr. Behm said, you’re applying tension to muscles and connective tissues. Tension activates proteins called integrins, which send and receive signals across cellular membranes. Those signals are the start of a cascade that leads to protein synthesis. That’s how muscles get bigger and stronger when you lift weights. 

That mechanism could explain the small gains in muscle strength and size associated with static stretching, Dr. Behm said. 

But can you really stretch your way to muscle growth? Theoretically, yes. But strength training is far more time-efficient, Dr. Behm says. Studies showing increases in muscle mass have typically stretched a single muscle (usually the calves, using a specialized device) for > 30 min/session, 6 d/wk for 6 weeks. And that’s for just one leg.

Still, stretching may be more accessible for some patients — research suggested that older and more sedentary people are most likely to benefit from stretching-induced gains in strength.

 

Stretching Benefit #2: Reduced Arterial Stiffness

“Most people don’t think about the cardiovascular benefits of stretching,” Dr. Behm said. There are some big ones. 

If your body doesn’t move well, it’s not unreasonable to assume your blood doesn’t flow well. That is indeed the case: Poor flexibility is associated with arterial stiffness. 

Stretching is associated not only with improved arterial function but also with reductions in resting heart rate and blood pressure and increased vasodilation.

Mobility improvements may have an indirect benefit on cardiovascular health as well. 

“Studies show runners are more economical when they’re more flexible,” Dr. Behm said. If your movement is more efficient, you’ll probably do more of it. Doing more, in turn, would lead to improved fitness. 
 

Stretching Benefit #3: Improved Performance

Research is equivocal on whether stretching improves athletic performance, said Joe Yoon, a sports massage therapist in Orlando, Florida, and author of Better Stretching. 

“But I’ve always taken the approach that if you can improve your range of motion and get into positions” required for your sport, you’ll probably perform better, with less risk for injury, Mr. Yoon said. 

It’s worth noting that some research over the past 30 years has linked pre-exercise static stretching with a loss of strength, power, and/or speed. 

But consider this: In a 2016 review, Dr. Behm and his coauthors showed that performance reductions were most likely to occur in two situations: 

When participants did extremely long stretches (duration, ≥ 60 sec per muscle).

When researchers tested the participants’ strength, power, or speed immediately after they stretched.

Avoiding those problems is easy, Dr. Behm said: Stretch each muscle for < 60 sec, and combine static stretches with more active warm-up exercises. 

“Stretching can impair your performance but only if you do it wrong,” he said.
 

Stretching Benefit #4: Fewer Injuries

When you stretch, the point where you feel tension is where the muscle is most vulnerable. “That’s where injuries usually happen,” Dr. Behm said. 

More flexibility in those areas allows your muscles to safely generate force at longer lengths. For an athlete, that means fewer injuries when they’re doing explosive movements or changing direction. 

For nonathletes, flexibility reduces injuries by improving balance. Better balance reduces the risk of falling and helps mitigate the damage if you do take a tumble.
 

Help Your Patients Get the Benefits of Stretching

Stretching, like training for endurance or strength, can be as complex as you want to make it. But Mr. Yoon advocates a simpler approach. 

“You see this flashy stuff online,” he said. “But if you see those trainers in real life or you book a session with them, they go right back to the basics.” 

Ideally, Mr. Yoon said, a flexibility routine will work the entire body. But if that’s too big a stretch for your patient, he recommends starting with one or two stretches for the most problematic area. 

For example, for a stiff back, try doing the puppy pose at least once a day, although twice is better. Hold the position for 30 seconds to 2 minutes, said Mr. Yoon. Even if you combine it with a dynamic movement like the cat-cow, the two exercises would take just a few minutes a day. 

“There’s this misconception that you have to do a lot of it to be successful,” Mr. Yoon said. 

Consistency is far more important than volume. Mr. Yoon recommends “a little bit every day — the minimum viable dose.” 

As a bonus, stretching an area like your upper back will probably improve your shoulder mobility, Mr. Yoon said. Same with your lower body: Stretches for your hips, over time, should also benefit your knees and lower back. 

And thanks to a phenomenon called nonlocal flexibility transfer, lower-body stretches should improve upper-body flexibility, at least temporarily. Shoulder stretches can also have an immediate effect on hip mobility. 

“It’s all connected,” Mr. Yoon said, which brings us back to where we started. 

If stretching can indeed reduce mortality risk, it’s probably because of interconnected pathways, rather than any single mechanism. 

Most obviously, stretching improves flexibility, which makes movement easier, improves balance, and reduces the risk for falls and other types of injuries. It can also lead to small improvements in strength. Less obviously, stretching improves several aspects of cardiovascular function, including circulation. 

“There seems to be a global effect in everything we do,” Dr. Behm said. “Whether you’re stretching or weight training, the message is sent throughout your body."

A version of this article appeared on Medscape.com.

For many, stretching is the fitness equivalent of awkward small talk. It’s the opening act, the thing you tolerate because you know it will be over soon. 

Others have challenged the practice, suggesting that stretching isn’t necessary at all. Some research has found that a preworkout stretch may even be disadvantageous, weakening muscles and hindering performance.

To put it plainly, no one seems terribly enthusiastic about touching their toes. 

That’s why a 2020 study on exercise and mortality was such a head-scratcher. The study found that stretching was uniquely associated with a lower risk for all-cause mortality among American adults. That’s after controlling for participation in other types of exercise. 

The finding seemed like a fluke, until a 2023 study found essentially the same thing. 

Among Korean adults, those who did flexibility exercise at least five times a week had a 20% lower risk of dying during the follow-up period than those who didn’t stretch at all. That was slightly better than the risk reduction associated with high volumes of aerobic exercise and resistance training. 

How can that be ? It turns out, stretching is linked to several health benefits that you might not expect.
 

The Surprising Benefits of Stretching

When we talk about stretching, we usually mean static stretching — getting into and holding a position that challenges a muscle, with the goal of improving range of motion around a joint. 

It doesn’t need to be a big challenge. “Research shows you can get increases in flexibility by stretching to the initial point of discomfort,” said David Behm, PhD, an exercise scientist at Memorial University of Newfoundland in Canada who’s published dozens of studies on stretching over the past quarter-century. 

That brings us to the first benefit.
 

Stretching Benefit #1: More Strength

At first glance, flexibility training and strength training have little in common. You lengthen muscles in the former and contract them in the latter. 

But in both cases, Dr. Behm said, you’re applying tension to muscles and connective tissues. Tension activates proteins called integrins, which send and receive signals across cellular membranes. Those signals are the start of a cascade that leads to protein synthesis. That’s how muscles get bigger and stronger when you lift weights. 

That mechanism could explain the small gains in muscle strength and size associated with static stretching, Dr. Behm said. 

But can you really stretch your way to muscle growth? Theoretically, yes. But strength training is far more time-efficient, Dr. Behm says. Studies showing increases in muscle mass have typically stretched a single muscle (usually the calves, using a specialized device) for > 30 min/session, 6 d/wk for 6 weeks. And that’s for just one leg.

Still, stretching may be more accessible for some patients — research suggested that older and more sedentary people are most likely to benefit from stretching-induced gains in strength.

 

Stretching Benefit #2: Reduced Arterial Stiffness

“Most people don’t think about the cardiovascular benefits of stretching,” Dr. Behm said. There are some big ones. 

If your body doesn’t move well, it’s not unreasonable to assume your blood doesn’t flow well. That is indeed the case: Poor flexibility is associated with arterial stiffness. 

Stretching is associated not only with improved arterial function but also with reductions in resting heart rate and blood pressure and increased vasodilation.

Mobility improvements may have an indirect benefit on cardiovascular health as well. 

“Studies show runners are more economical when they’re more flexible,” Dr. Behm said. If your movement is more efficient, you’ll probably do more of it. Doing more, in turn, would lead to improved fitness. 
 

Stretching Benefit #3: Improved Performance

Research is equivocal on whether stretching improves athletic performance, said Joe Yoon, a sports massage therapist in Orlando, Florida, and author of Better Stretching. 

“But I’ve always taken the approach that if you can improve your range of motion and get into positions” required for your sport, you’ll probably perform better, with less risk for injury, Mr. Yoon said. 

It’s worth noting that some research over the past 30 years has linked pre-exercise static stretching with a loss of strength, power, and/or speed. 

But consider this: In a 2016 review, Dr. Behm and his coauthors showed that performance reductions were most likely to occur in two situations: 

When participants did extremely long stretches (duration, ≥ 60 sec per muscle).

When researchers tested the participants’ strength, power, or speed immediately after they stretched.

Avoiding those problems is easy, Dr. Behm said: Stretch each muscle for < 60 sec, and combine static stretches with more active warm-up exercises. 

“Stretching can impair your performance but only if you do it wrong,” he said.
 

Stretching Benefit #4: Fewer Injuries

When you stretch, the point where you feel tension is where the muscle is most vulnerable. “That’s where injuries usually happen,” Dr. Behm said. 

More flexibility in those areas allows your muscles to safely generate force at longer lengths. For an athlete, that means fewer injuries when they’re doing explosive movements or changing direction. 

For nonathletes, flexibility reduces injuries by improving balance. Better balance reduces the risk of falling and helps mitigate the damage if you do take a tumble.
 

Help Your Patients Get the Benefits of Stretching

Stretching, like training for endurance or strength, can be as complex as you want to make it. But Mr. Yoon advocates a simpler approach. 

“You see this flashy stuff online,” he said. “But if you see those trainers in real life or you book a session with them, they go right back to the basics.” 

Ideally, Mr. Yoon said, a flexibility routine will work the entire body. But if that’s too big a stretch for your patient, he recommends starting with one or two stretches for the most problematic area. 

For example, for a stiff back, try doing the puppy pose at least once a day, although twice is better. Hold the position for 30 seconds to 2 minutes, said Mr. Yoon. Even if you combine it with a dynamic movement like the cat-cow, the two exercises would take just a few minutes a day. 

“There’s this misconception that you have to do a lot of it to be successful,” Mr. Yoon said. 

Consistency is far more important than volume. Mr. Yoon recommends “a little bit every day — the minimum viable dose.” 

As a bonus, stretching an area like your upper back will probably improve your shoulder mobility, Mr. Yoon said. Same with your lower body: Stretches for your hips, over time, should also benefit your knees and lower back. 

And thanks to a phenomenon called nonlocal flexibility transfer, lower-body stretches should improve upper-body flexibility, at least temporarily. Shoulder stretches can also have an immediate effect on hip mobility. 

“It’s all connected,” Mr. Yoon said, which brings us back to where we started. 

If stretching can indeed reduce mortality risk, it’s probably because of interconnected pathways, rather than any single mechanism. 

Most obviously, stretching improves flexibility, which makes movement easier, improves balance, and reduces the risk for falls and other types of injuries. It can also lead to small improvements in strength. Less obviously, stretching improves several aspects of cardiovascular function, including circulation. 

“There seems to be a global effect in everything we do,” Dr. Behm said. “Whether you’re stretching or weight training, the message is sent throughout your body."

A version of this article appeared on Medscape.com.

For many, stretching is the fitness equivalent of awkward small talk. It’s the opening act, the thing you tolerate because you know it will be over soon. 

Others have challenged the practice, suggesting that stretching isn’t necessary at all. Some research has found that a preworkout stretch may even be disadvantageous, weakening muscles and hindering performance.

To put it plainly, no one seems terribly enthusiastic about touching their toes. 

That’s why a 2020 study on exercise and mortality was such a head-scratcher. The study found that stretching was uniquely associated with a lower risk for all-cause mortality among American adults. That’s after controlling for participation in other types of exercise. 

The finding seemed like a fluke, until a 2023 study found essentially the same thing. 

Among Korean adults, those who did flexibility exercise at least five times a week had a 20% lower risk of dying during the follow-up period than those who didn’t stretch at all. That was slightly better than the risk reduction associated with high volumes of aerobic exercise and resistance training. 

How can that be ? It turns out, stretching is linked to several health benefits that you might not expect.
 

The Surprising Benefits of Stretching

When we talk about stretching, we usually mean static stretching — getting into and holding a position that challenges a muscle, with the goal of improving range of motion around a joint. 

It doesn’t need to be a big challenge. “Research shows you can get increases in flexibility by stretching to the initial point of discomfort,” said David Behm, PhD, an exercise scientist at Memorial University of Newfoundland in Canada who’s published dozens of studies on stretching over the past quarter-century. 

That brings us to the first benefit.
 

Stretching Benefit #1: More Strength

At first glance, flexibility training and strength training have little in common. You lengthen muscles in the former and contract them in the latter. 

But in both cases, Dr. Behm said, you’re applying tension to muscles and connective tissues. Tension activates proteins called integrins, which send and receive signals across cellular membranes. Those signals are the start of a cascade that leads to protein synthesis. That’s how muscles get bigger and stronger when you lift weights. 

That mechanism could explain the small gains in muscle strength and size associated with static stretching, Dr. Behm said. 

But can you really stretch your way to muscle growth? Theoretically, yes. But strength training is far more time-efficient, Dr. Behm says. Studies showing increases in muscle mass have typically stretched a single muscle (usually the calves, using a specialized device) for > 30 min/session, 6 d/wk for 6 weeks. And that’s for just one leg.

Still, stretching may be more accessible for some patients — research suggested that older and more sedentary people are most likely to benefit from stretching-induced gains in strength.

 

Stretching Benefit #2: Reduced Arterial Stiffness

“Most people don’t think about the cardiovascular benefits of stretching,” Dr. Behm said. There are some big ones. 

If your body doesn’t move well, it’s not unreasonable to assume your blood doesn’t flow well. That is indeed the case: Poor flexibility is associated with arterial stiffness. 

Stretching is associated not only with improved arterial function but also with reductions in resting heart rate and blood pressure and increased vasodilation.

Mobility improvements may have an indirect benefit on cardiovascular health as well. 

“Studies show runners are more economical when they’re more flexible,” Dr. Behm said. If your movement is more efficient, you’ll probably do more of it. Doing more, in turn, would lead to improved fitness. 
 

Stretching Benefit #3: Improved Performance

Research is equivocal on whether stretching improves athletic performance, said Joe Yoon, a sports massage therapist in Orlando, Florida, and author of Better Stretching. 

“But I’ve always taken the approach that if you can improve your range of motion and get into positions” required for your sport, you’ll probably perform better, with less risk for injury, Mr. Yoon said. 

It’s worth noting that some research over the past 30 years has linked pre-exercise static stretching with a loss of strength, power, and/or speed. 

But consider this: In a 2016 review, Dr. Behm and his coauthors showed that performance reductions were most likely to occur in two situations: 

When participants did extremely long stretches (duration, ≥ 60 sec per muscle).

When researchers tested the participants’ strength, power, or speed immediately after they stretched.

Avoiding those problems is easy, Dr. Behm said: Stretch each muscle for < 60 sec, and combine static stretches with more active warm-up exercises. 

“Stretching can impair your performance but only if you do it wrong,” he said.
 

Stretching Benefit #4: Fewer Injuries

When you stretch, the point where you feel tension is where the muscle is most vulnerable. “That’s where injuries usually happen,” Dr. Behm said. 

More flexibility in those areas allows your muscles to safely generate force at longer lengths. For an athlete, that means fewer injuries when they’re doing explosive movements or changing direction. 

For nonathletes, flexibility reduces injuries by improving balance. Better balance reduces the risk of falling and helps mitigate the damage if you do take a tumble.
 

Help Your Patients Get the Benefits of Stretching

Stretching, like training for endurance or strength, can be as complex as you want to make it. But Mr. Yoon advocates a simpler approach. 

“You see this flashy stuff online,” he said. “But if you see those trainers in real life or you book a session with them, they go right back to the basics.” 

Ideally, Mr. Yoon said, a flexibility routine will work the entire body. But if that’s too big a stretch for your patient, he recommends starting with one or two stretches for the most problematic area. 

For example, for a stiff back, try doing the puppy pose at least once a day, although twice is better. Hold the position for 30 seconds to 2 minutes, said Mr. Yoon. Even if you combine it with a dynamic movement like the cat-cow, the two exercises would take just a few minutes a day. 

“There’s this misconception that you have to do a lot of it to be successful,” Mr. Yoon said. 

Consistency is far more important than volume. Mr. Yoon recommends “a little bit every day — the minimum viable dose.” 

As a bonus, stretching an area like your upper back will probably improve your shoulder mobility, Mr. Yoon said. Same with your lower body: Stretches for your hips, over time, should also benefit your knees and lower back. 

And thanks to a phenomenon called nonlocal flexibility transfer, lower-body stretches should improve upper-body flexibility, at least temporarily. Shoulder stretches can also have an immediate effect on hip mobility. 

“It’s all connected,” Mr. Yoon said, which brings us back to where we started. 

If stretching can indeed reduce mortality risk, it’s probably because of interconnected pathways, rather than any single mechanism. 

Most obviously, stretching improves flexibility, which makes movement easier, improves balance, and reduces the risk for falls and other types of injuries. It can also lead to small improvements in strength. Less obviously, stretching improves several aspects of cardiovascular function, including circulation. 

“There seems to be a global effect in everything we do,” Dr. Behm said. “Whether you’re stretching or weight training, the message is sent throughout your body."

A version of this article appeared on Medscape.com.

As a front-line treatment for type 2 diabetes, metformin is among the most widely prescribed drugs in the United States. In 2021 alone, clinicians wrote more than 91 million orders for the medication — up from 40 million 2004.

But is metformin just getting started? Emerging evidence suggests the drug may be effective for a much broader range of conditions beyond managing high blood glucose, including various cancers, obesity, liver disease, cardiovascular, neurodegenerative, and renal diseases. As the evidence for diverse uses accumulates, many trials have launched, with researchers looking to expand metformin’s indications and validate or explore new directions.

Metformin’s long history as a pharmaceutical includes an herbal ancestry, recognition in 1918 for its ability to lower blood glucose, being cast aside because of toxicity fears in the 1930s, rediscovery and synthesis in Europe in the 1940s, the first reported use for diabetes in 1957, and approval in the United States in 1994.

The drug has maintained its place as the preferred first-line treatment for type 2 diabetes since 2011, when it was first included in the World Health Organization’s essential medicines list.

“The focus hitherto has been primarily on its insulin sensitization effects,” Akshay Jain, MD, a clinical and research endocrinologist at TLC Diabetes and Endocrinology, in Surrey, British Columbia, Canada, told this news organization.

“The recent surge of renewed interest is in part related to its postulated effects on multiple other receptors,” he said. “In my mind, the metformin data on coronary artery disease reduction and cancer-protective effects have come farther along than other disease states.”

Cardiovascular Outcomes

Gregory G. Schwartz, MD, PhD, chief of the cardiology section at Rocky Mountain Regional VA Medical Center and professor of medicine at the University of Colorado School of Medicine in Aurora, is leading the VA-IMPACT trial. Despite metformin’s long history and widespread use, he said his study is the first placebo-controlled cardiovascular outcomes trial of the drug.

Launched in 2023, the study tests the hypothesis that metformin reduces the risk for death or nonfatal ischemic cardiovascular events in patients with prediabetes and established coronary, cerebrovascular, or peripheral artery disease, Dr. Schwartz said. The trial is being conducted at roughly 40 VA medical centers, with a planned enrollment of 7410 patients. The estimated completion date is March 2029.

“The principal mechanism of action of metformin is through activation of AMP [adenosine monophosphate]–activated protein kinase, a central pathway in metabolic regulation, cell protection, and survival,” Dr. Schwartz explained. “Experimental data have demonstrated attenuated development of atherosclerosis, reduced myocardial infarct size, improved endothelial function, and antiarrhythmic actions — none of those dependent on the presence of diabetes.”

Dr. Schwartz and his colleagues decided to test their hypothesis in people with prediabetes, rather than diabetes, to create a “true placebo-controlled comparison,” he said.

“If patients with type 2 diabetes had been chosen, there would be potential for confounding because a placebo group would require more treatment with other active antihyperglycemic medications to achieve the same degree of glycemic control as a metformin group,” Dr. Schwartz said.

“If proven efficacious in the VA-IMPACT trial, metformin could provide an inexpensive, generally safe, and well-tolerated approach to reduce cardiovascular morbidity and mortality in a large segment of the population,” Dr. Schwartz added. “Perhaps the old dog can learn some new tricks.”

Other recruiting trials looking at cardiovascular-related outcomes include Met-PEF, LIMIT, and Metformin as an Adjunctive Therapy to Catheter Ablation in Atrial Fibrillation.

Reducing Cancer Risks

Sai Yendamuri, MD, chair of the Department of Thoracic Surgery and director of the Thoracic Surgery Laboratory at Roswell Park Comprehensive Cancer Center in Buffalo, New York, is leading a phase 2 trial exploring whether metformin can prevent lung cancer in people with overweight or obesity who are at a high risk for the malignancy.

The study, which has accrued about 60% of its estimated enrollment, also will assess whether metformin can reprogram participants’ immune systems, with a view toward reducing the activity of regulatory T cells that are linked to development of tumors.

“In our preclinical and retrospective clinical data, we found that metformin had anticancer effects but only if the patients were overweight,” Dr. Yendamuri said. “In mice, we find that obesity increases regulatory T-cell function, which suppresses the immune system of the lungs. This effect is reversed by metformin.” The team is conducting the current study to examine if this happens in patients, as well. Results are expected next year.

Research is underway in other tumor types, including oral and endometrial, and brain cancers.

Preventing Alzheimer’s Disease

Cognitive function — or at least delaying its erosion — represents another front for metformin. José A. Luchsinger, MD, MPH, vice-chair for clinical and epidemiological research and director of the section on geriatrics, gerontology, and aging at Columbia University Irving Medical Center in New York City, is heading a phase 2/3 randomized controlled trial assessing the ability of the drug to prevent Alzheimer›s disease.

The study investigators hope to enroll 326 men and women aged 55-90 years with early and late mild cognitive impairment, overweight or obesity, and no diabetes.

“The hypothesis is that improving insulin and glucose levels can lead to lowering the risk of Alzheimer’s disease,” Dr. Luchsinger said. Recruitment should be complete by the end of 2024 and results are expected in late 2026.

Similar studies are underway in Europe and Asia.

Other areas of investigation, while tantalizing, are mostly in early stages, although bolstered by preclinical and mechanistic studies. The authors of a recent review on the potential mechanisms of action of metformin and existing evidence of the drug›s effectiveness — or lack thereof — in treating diseases other than diabetes, wrote: “Collectively, these data raise the question: Is metformin a drug for all diseases? It remains unclear as to whether all of these putative beneficial effects are secondary to its actions as an antihyperglycemic and insulin-sensitizing drug, or result from other cellular actions, including inhibition of mTOR (mammalian target for rapamycin), or direct antiviral actions.”

Off-Label Uses

Metformin currently is approved by the US Food and Drug Administration only for the treatment of type 2 diabetes, although it is also the only antidiabetic medication for prediabetes currently recommended by the American Diabetes Association.

Some studies currently are looking at its use in a variety of off-label indications, including obesity, gestational diabetes, weight gain from antipsychotics, and polycystic ovary syndrome.

For the most part, metformin is considered a safe drug, but it is not risk-free, Dr. Jain cautioned.

“Although it would certainly be helpful to see if this inexpensive medication that’s universally available can help in disease states, one shouldn’t overlook the potential risk of adverse effects, such as gastrointestinal, potential vitamin B12 deficiency, blunting of skeletal muscle development and the rare risk of lactic acidosis in those with kidney impairment,” he said.

“Similarly, with recent reports of the carcinogenic potential of certain formulations of long-acting metformin that contained NDMA [N-nitrosodimethylamine], it would be imperative that these kinks are removed before we incorporate metformin as the gift that keeps giving.”

Dr. Jain reported financial relationships with Abbott, Amgen, Boehringer Ingelheim, Dexcom, Eli Lilly, Janssen, Medtronic, Merck, and Novo Nordisk. Dr. Yendamuri disclosed serving on the scientific advisory board member of Karkinos Healthcare and research funding from Lumeda for the metformin study. Dr. Luchsinger reported receiving donated metformin and matching placebo from EMD Serono, a subsidiary of Merck, for the MAP study. Dr. Schwartz received research support from the US Department of Veterans Affairs as National Chair of the VA-IMPACT trial.
 

A version of this article appeared on Medscape.com.

As a front-line treatment for type 2 diabetes, metformin is among the most widely prescribed drugs in the United States. In 2021 alone, clinicians wrote more than 91 million orders for the medication — up from 40 million 2004.

But is metformin just getting started? Emerging evidence suggests the drug may be effective for a much broader range of conditions beyond managing high blood glucose, including various cancers, obesity, liver disease, cardiovascular, neurodegenerative, and renal diseases. As the evidence for diverse uses accumulates, many trials have launched, with researchers looking to expand metformin’s indications and validate or explore new directions.

Metformin’s long history as a pharmaceutical includes an herbal ancestry, recognition in 1918 for its ability to lower blood glucose, being cast aside because of toxicity fears in the 1930s, rediscovery and synthesis in Europe in the 1940s, the first reported use for diabetes in 1957, and approval in the United States in 1994.

The drug has maintained its place as the preferred first-line treatment for type 2 diabetes since 2011, when it was first included in the World Health Organization’s essential medicines list.

“The focus hitherto has been primarily on its insulin sensitization effects,” Akshay Jain, MD, a clinical and research endocrinologist at TLC Diabetes and Endocrinology, in Surrey, British Columbia, Canada, told this news organization.

“The recent surge of renewed interest is in part related to its postulated effects on multiple other receptors,” he said. “In my mind, the metformin data on coronary artery disease reduction and cancer-protective effects have come farther along than other disease states.”

Cardiovascular Outcomes

Gregory G. Schwartz, MD, PhD, chief of the cardiology section at Rocky Mountain Regional VA Medical Center and professor of medicine at the University of Colorado School of Medicine in Aurora, is leading the VA-IMPACT trial. Despite metformin’s long history and widespread use, he said his study is the first placebo-controlled cardiovascular outcomes trial of the drug.

Launched in 2023, the study tests the hypothesis that metformin reduces the risk for death or nonfatal ischemic cardiovascular events in patients with prediabetes and established coronary, cerebrovascular, or peripheral artery disease, Dr. Schwartz said. The trial is being conducted at roughly 40 VA medical centers, with a planned enrollment of 7410 patients. The estimated completion date is March 2029.

“The principal mechanism of action of metformin is through activation of AMP [adenosine monophosphate]–activated protein kinase, a central pathway in metabolic regulation, cell protection, and survival,” Dr. Schwartz explained. “Experimental data have demonstrated attenuated development of atherosclerosis, reduced myocardial infarct size, improved endothelial function, and antiarrhythmic actions — none of those dependent on the presence of diabetes.”

Dr. Schwartz and his colleagues decided to test their hypothesis in people with prediabetes, rather than diabetes, to create a “true placebo-controlled comparison,” he said.

“If patients with type 2 diabetes had been chosen, there would be potential for confounding because a placebo group would require more treatment with other active antihyperglycemic medications to achieve the same degree of glycemic control as a metformin group,” Dr. Schwartz said.

“If proven efficacious in the VA-IMPACT trial, metformin could provide an inexpensive, generally safe, and well-tolerated approach to reduce cardiovascular morbidity and mortality in a large segment of the population,” Dr. Schwartz added. “Perhaps the old dog can learn some new tricks.”

Other recruiting trials looking at cardiovascular-related outcomes include Met-PEF, LIMIT, and Metformin as an Adjunctive Therapy to Catheter Ablation in Atrial Fibrillation.

Reducing Cancer Risks

Sai Yendamuri, MD, chair of the Department of Thoracic Surgery and director of the Thoracic Surgery Laboratory at Roswell Park Comprehensive Cancer Center in Buffalo, New York, is leading a phase 2 trial exploring whether metformin can prevent lung cancer in people with overweight or obesity who are at a high risk for the malignancy.

The study, which has accrued about 60% of its estimated enrollment, also will assess whether metformin can reprogram participants’ immune systems, with a view toward reducing the activity of regulatory T cells that are linked to development of tumors.

“In our preclinical and retrospective clinical data, we found that metformin had anticancer effects but only if the patients were overweight,” Dr. Yendamuri said. “In mice, we find that obesity increases regulatory T-cell function, which suppresses the immune system of the lungs. This effect is reversed by metformin.” The team is conducting the current study to examine if this happens in patients, as well. Results are expected next year.

Research is underway in other tumor types, including oral and endometrial, and brain cancers.

Preventing Alzheimer’s Disease

Cognitive function — or at least delaying its erosion — represents another front for metformin. José A. Luchsinger, MD, MPH, vice-chair for clinical and epidemiological research and director of the section on geriatrics, gerontology, and aging at Columbia University Irving Medical Center in New York City, is heading a phase 2/3 randomized controlled trial assessing the ability of the drug to prevent Alzheimer›s disease.

The study investigators hope to enroll 326 men and women aged 55-90 years with early and late mild cognitive impairment, overweight or obesity, and no diabetes.

“The hypothesis is that improving insulin and glucose levels can lead to lowering the risk of Alzheimer’s disease,” Dr. Luchsinger said. Recruitment should be complete by the end of 2024 and results are expected in late 2026.

Similar studies are underway in Europe and Asia.

Other areas of investigation, while tantalizing, are mostly in early stages, although bolstered by preclinical and mechanistic studies. The authors of a recent review on the potential mechanisms of action of metformin and existing evidence of the drug›s effectiveness — or lack thereof — in treating diseases other than diabetes, wrote: “Collectively, these data raise the question: Is metformin a drug for all diseases? It remains unclear as to whether all of these putative beneficial effects are secondary to its actions as an antihyperglycemic and insulin-sensitizing drug, or result from other cellular actions, including inhibition of mTOR (mammalian target for rapamycin), or direct antiviral actions.”

Off-Label Uses

Metformin currently is approved by the US Food and Drug Administration only for the treatment of type 2 diabetes, although it is also the only antidiabetic medication for prediabetes currently recommended by the American Diabetes Association.

Some studies currently are looking at its use in a variety of off-label indications, including obesity, gestational diabetes, weight gain from antipsychotics, and polycystic ovary syndrome.

For the most part, metformin is considered a safe drug, but it is not risk-free, Dr. Jain cautioned.

“Although it would certainly be helpful to see if this inexpensive medication that’s universally available can help in disease states, one shouldn’t overlook the potential risk of adverse effects, such as gastrointestinal, potential vitamin B12 deficiency, blunting of skeletal muscle development and the rare risk of lactic acidosis in those with kidney impairment,” he said.

“Similarly, with recent reports of the carcinogenic potential of certain formulations of long-acting metformin that contained NDMA [N-nitrosodimethylamine], it would be imperative that these kinks are removed before we incorporate metformin as the gift that keeps giving.”

Dr. Jain reported financial relationships with Abbott, Amgen, Boehringer Ingelheim, Dexcom, Eli Lilly, Janssen, Medtronic, Merck, and Novo Nordisk. Dr. Yendamuri disclosed serving on the scientific advisory board member of Karkinos Healthcare and research funding from Lumeda for the metformin study. Dr. Luchsinger reported receiving donated metformin and matching placebo from EMD Serono, a subsidiary of Merck, for the MAP study. Dr. Schwartz received research support from the US Department of Veterans Affairs as National Chair of the VA-IMPACT trial.
 

A version of this article appeared on Medscape.com.

As a front-line treatment for type 2 diabetes, metformin is among the most widely prescribed drugs in the United States. In 2021 alone, clinicians wrote more than 91 million orders for the medication — up from 40 million 2004.

But is metformin just getting started? Emerging evidence suggests the drug may be effective for a much broader range of conditions beyond managing high blood glucose, including various cancers, obesity, liver disease, cardiovascular, neurodegenerative, and renal diseases. As the evidence for diverse uses accumulates, many trials have launched, with researchers looking to expand metformin’s indications and validate or explore new directions.

Metformin’s long history as a pharmaceutical includes an herbal ancestry, recognition in 1918 for its ability to lower blood glucose, being cast aside because of toxicity fears in the 1930s, rediscovery and synthesis in Europe in the 1940s, the first reported use for diabetes in 1957, and approval in the United States in 1994.

The drug has maintained its place as the preferred first-line treatment for type 2 diabetes since 2011, when it was first included in the World Health Organization’s essential medicines list.

“The focus hitherto has been primarily on its insulin sensitization effects,” Akshay Jain, MD, a clinical and research endocrinologist at TLC Diabetes and Endocrinology, in Surrey, British Columbia, Canada, told this news organization.

“The recent surge of renewed interest is in part related to its postulated effects on multiple other receptors,” he said. “In my mind, the metformin data on coronary artery disease reduction and cancer-protective effects have come farther along than other disease states.”

Cardiovascular Outcomes

Gregory G. Schwartz, MD, PhD, chief of the cardiology section at Rocky Mountain Regional VA Medical Center and professor of medicine at the University of Colorado School of Medicine in Aurora, is leading the VA-IMPACT trial. Despite metformin’s long history and widespread use, he said his study is the first placebo-controlled cardiovascular outcomes trial of the drug.

Launched in 2023, the study tests the hypothesis that metformin reduces the risk for death or nonfatal ischemic cardiovascular events in patients with prediabetes and established coronary, cerebrovascular, or peripheral artery disease, Dr. Schwartz said. The trial is being conducted at roughly 40 VA medical centers, with a planned enrollment of 7410 patients. The estimated completion date is March 2029.

“The principal mechanism of action of metformin is through activation of AMP [adenosine monophosphate]–activated protein kinase, a central pathway in metabolic regulation, cell protection, and survival,” Dr. Schwartz explained. “Experimental data have demonstrated attenuated development of atherosclerosis, reduced myocardial infarct size, improved endothelial function, and antiarrhythmic actions — none of those dependent on the presence of diabetes.”

Dr. Schwartz and his colleagues decided to test their hypothesis in people with prediabetes, rather than diabetes, to create a “true placebo-controlled comparison,” he said.

“If patients with type 2 diabetes had been chosen, there would be potential for confounding because a placebo group would require more treatment with other active antihyperglycemic medications to achieve the same degree of glycemic control as a metformin group,” Dr. Schwartz said.

“If proven efficacious in the VA-IMPACT trial, metformin could provide an inexpensive, generally safe, and well-tolerated approach to reduce cardiovascular morbidity and mortality in a large segment of the population,” Dr. Schwartz added. “Perhaps the old dog can learn some new tricks.”

Other recruiting trials looking at cardiovascular-related outcomes include Met-PEF, LIMIT, and Metformin as an Adjunctive Therapy to Catheter Ablation in Atrial Fibrillation.

Reducing Cancer Risks

Sai Yendamuri, MD, chair of the Department of Thoracic Surgery and director of the Thoracic Surgery Laboratory at Roswell Park Comprehensive Cancer Center in Buffalo, New York, is leading a phase 2 trial exploring whether metformin can prevent lung cancer in people with overweight or obesity who are at a high risk for the malignancy.

The study, which has accrued about 60% of its estimated enrollment, also will assess whether metformin can reprogram participants’ immune systems, with a view toward reducing the activity of regulatory T cells that are linked to development of tumors.

“In our preclinical and retrospective clinical data, we found that metformin had anticancer effects but only if the patients were overweight,” Dr. Yendamuri said. “In mice, we find that obesity increases regulatory T-cell function, which suppresses the immune system of the lungs. This effect is reversed by metformin.” The team is conducting the current study to examine if this happens in patients, as well. Results are expected next year.

Research is underway in other tumor types, including oral and endometrial, and brain cancers.

Preventing Alzheimer’s Disease

Cognitive function — or at least delaying its erosion — represents another front for metformin. José A. Luchsinger, MD, MPH, vice-chair for clinical and epidemiological research and director of the section on geriatrics, gerontology, and aging at Columbia University Irving Medical Center in New York City, is heading a phase 2/3 randomized controlled trial assessing the ability of the drug to prevent Alzheimer›s disease.

The study investigators hope to enroll 326 men and women aged 55-90 years with early and late mild cognitive impairment, overweight or obesity, and no diabetes.

“The hypothesis is that improving insulin and glucose levels can lead to lowering the risk of Alzheimer’s disease,” Dr. Luchsinger said. Recruitment should be complete by the end of 2024 and results are expected in late 2026.

Similar studies are underway in Europe and Asia.

Other areas of investigation, while tantalizing, are mostly in early stages, although bolstered by preclinical and mechanistic studies. The authors of a recent review on the potential mechanisms of action of metformin and existing evidence of the drug›s effectiveness — or lack thereof — in treating diseases other than diabetes, wrote: “Collectively, these data raise the question: Is metformin a drug for all diseases? It remains unclear as to whether all of these putative beneficial effects are secondary to its actions as an antihyperglycemic and insulin-sensitizing drug, or result from other cellular actions, including inhibition of mTOR (mammalian target for rapamycin), or direct antiviral actions.”

Off-Label Uses

Metformin currently is approved by the US Food and Drug Administration only for the treatment of type 2 diabetes, although it is also the only antidiabetic medication for prediabetes currently recommended by the American Diabetes Association.

Some studies currently are looking at its use in a variety of off-label indications, including obesity, gestational diabetes, weight gain from antipsychotics, and polycystic ovary syndrome.

For the most part, metformin is considered a safe drug, but it is not risk-free, Dr. Jain cautioned.

“Although it would certainly be helpful to see if this inexpensive medication that’s universally available can help in disease states, one shouldn’t overlook the potential risk of adverse effects, such as gastrointestinal, potential vitamin B12 deficiency, blunting of skeletal muscle development and the rare risk of lactic acidosis in those with kidney impairment,” he said.

“Similarly, with recent reports of the carcinogenic potential of certain formulations of long-acting metformin that contained NDMA [N-nitrosodimethylamine], it would be imperative that these kinks are removed before we incorporate metformin as the gift that keeps giving.”

Dr. Jain reported financial relationships with Abbott, Amgen, Boehringer Ingelheim, Dexcom, Eli Lilly, Janssen, Medtronic, Merck, and Novo Nordisk. Dr. Yendamuri disclosed serving on the scientific advisory board member of Karkinos Healthcare and research funding from Lumeda for the metformin study. Dr. Luchsinger reported receiving donated metformin and matching placebo from EMD Serono, a subsidiary of Merck, for the MAP study. Dr. Schwartz received research support from the US Department of Veterans Affairs as National Chair of the VA-IMPACT trial.
 

A version of this article appeared on Medscape.com.

Bariatric surgery appears to decrease the risk for some cancers, but it may increase the risk for others, particularly colorectal cancer (CRC), according to a synthesis of current evidence.

“There has been a recent burst of studies examining the association between bariatric surgery and the longitudinal risks of developing cancer,” corresponding author Zhi Ven Fong, MD, MPH, DrPH, surgical oncologist, Mayo Clinic Arizona, Phoenix, said in an interview. “However, there has not been a rigorous and critical analysis of the data published to date.”

In evaluating research showing an association between bariatric surgery and longitudinal cancer risk, the investigators found that the quality of the studies and their findings are “heterogeneous and might be susceptible to bias,” Dr. Fong said.

Bariatric surgery appears to have the strongest and most consistent association with the reduction of breast, ovarian, and endometrial cancer risk, first author Pei-Wen Lim, MD, MS, bariatric surgeon at Mayo Clinic Arizona, Phoenix, told this news organization. “However, there have been concerning signals from preclinical and epidemiological studies that bariatric surgery may be associated with a higher risk of developing colorectal cancers,” she added.

The authors cautioned against certain changes in clinical management.

“First, cancer surveillance frequency should not be altered after bariatric surgery because of any assumed reduction in longitudinal cancer risk, and surveillance strategy should mirror that of an average-risk individual,” they wrote. “Secondly, the indications for bariatric surgery should not be expanded for the purpose of cancer-risk mitigation.”

The review was published online in JAMA Surgery.
 

Protection Against Hormone-Related Cancers

The authors pointed to several studies that appear to support the association between bariatric surgery and decreased risk for hormone-related cancers.

Among them is an observational study of 6781 patients in Canada that showed a significant reduction in breast cancer risk at a median follow-up of 5 years in those who had bariatric surgery vs those who did not (P = .01).

The largest study to date on risk for hormone-related cancer after bariatric surgery was conducted using New York State data for 302,883 women.

It showed a lower rate of breast, endometrial, and ovarian cancers after bariatric surgery (hazard ratio [HR], 0.78; P < .001), with Roux-en-Y gastric bypass conferring the greatest benefit compared with laparoscopic sleeve gastrectomy (HR, 0.66; P = .006) and laparoscopic adjustable gastric banding (HR, 0.83; P = .006).

Beyond the shared mechanisms explaining obesity and cancer risk, a proposed explanation for the strong, consistent association between bariatric surgery and hormone-sensitive cancers is the role obesity-related changes in estrogen stimulation play in development of such cancers, the authors noted.
 

Association With GI Cancers

The association between bariatric surgery and development of esophageal, gastric, liver, and pancreas cancers is less clear. The data are heterogeneous, with studies showing either no association or decreased longitudinal incidence, the authors reported.

The data are also mixed when it comes to CRC. Epidemiological studies have demonstrated decreased longitudinal incidence of colon and rectal cancer after bariatric surgery; however, two studies have suggested an increased CRC risk after bariatric surgery, the authors noted.

A 15-year study from England that matched 8794 patients with obesity who underwent bariatric surgery with 8794 patients with obesity who did not have the surgery showed that gastric bypass (but not gastric banding or sleeve gastrectomy) was associated with a greater than twofold increased risk of developing colon and rectal cancer (odds ratio, 2.63).

These findings were corroborated in a Swedish cohort study with more than 10 years of follow-up data.

One potential explanation for the heterogeneous findings is that “present studies do not discriminate the sub-types of colon and rectal cancer, with bariatric surgery possibly increasing the incidence of colitis-associated cancers but not hereditary cancers,” the authors wrote.

“The mechanism by which gastric bypass may increase the risk of colorectal cancer is through changes in the gut’s microbiome. These changes in gut flora may triumph the protective effect of weight loss on the development of colorectal cancers,” Dr. Fong said.

Prospective studies are necessary to better delineate CRC risk after bariatric surgery, the authors wrote.
 

Benefits Outweigh Risk

“Ultimately, it has been proven that bariatric surgery saves lives by improving the metabolic profile of patients with obesity through reduction in cardiovascular risk factors such as hypertension, diabetes, and nonalcoholic fatty liver disease,” Dr. Lim said.

“If patients qualify for bariatric surgery on the basis of their BMI or comorbidities, they should pursue it for its metabolic benefits, but perhaps consider timely or closer-interval screening colonoscopies to monitor for potential colorectal cancer development,” Dr. Lim added.

When asked to comment on the review, Marina Kurian, MD, president, American Society for Metabolic and Bariatric Surgery, also pointed to the advantages of bariatric surgery in reducing major adverse cardiovascular events and improving hypertension, hyperlipidemia, and diabetes.

Bariatric surgery reduces many types of cancers, although the data specific to CRC risk with bariatric surgery are mixed, she added.

“The jury is still out,” said Dr. Kurian, clinical professor of surgery at NYU Langone Health in New York, who was not involved in the review. “There are papers and meta-analyses that show benefit even in colorectal cancer, but then there are a couple of papers out there that suggest a risk that seems to be specific to men.

“It could just be a numbers game, where we may not have enough data. We need more granular data that will help address these nuances and really determine what is the actual risk,” Dr. Kurian said. “But overall, for cancer, bariatric surgery is a win.”

This research had no specific funding. Dr. Fong and Dr. Lim had no relevant disclosures. Dr. Kurian disclosed relationships with Allergan, Allurion, CineMed, CSATS, Ezisurg Medical, Hernon, Johnson & Johnson, Medtronic, Novo, Stryker, and Vivus.
 

A version of this article appeared on Medscape.com.