Obesity

Brain atrophy patterns are similar in individuals with obesity and those with Alzheimer’s disease (AD), a new study shows.

Comparisons of MRI scans for more than 1,000 participants indicate correlations between the two conditions, especially in areas of gray matter thinning, suggesting that managing excess weight might slow cognitive decline and lower the risk for AD, according to the researchers.

However, brain maps of obesity did not correlate with maps of amyloid or tau protein accumulation.

“The fact that obesity-related brain atrophy did not correlate with the distribution of amyloid and tau proteins in AD was not what we expected,” study author Filip Morys, PhD, a postdoctoral researcher at McGill University, Montreal, said in an interview. “But it might just show that the specific mechanisms underpinning obesity- and Alzheimer’s disease–related neurodegeneration are different. This remains to be confirmed.”

The study was published in the Journal of Alzheimer’s Disease.
 

Cortical Thinning

The current study was prompted by the team’s earlier study, which showed that obesity-related neurodegeneration patterns were visually similar to those of AD, said Dr. Morys. “It was known previously that obesity is a risk factor for AD, but we wanted to directly compare brain atrophy patterns in both, which is what we did in this new study.”

The researchers analyzed data from a pooled sample of more than 1,300 participants. From the ADNI database, the researchers selected participants with AD and age- and sex-matched cognitively healthy controls. From the UK Biobank, the researchers drew a sample of lean, overweight, and obese participants without neurologic disease.

To determine how the weight status of patients with AD affects the correspondence between AD and obesity maps, they categorized participants with AD and healthy controls from the ADNI database into lean, overweight, and obese subgroups.

Then, to investigate mechanisms that might drive the similarities between obesity-related brain atrophy and AD-related amyloid-beta accumulation, they looked for overlapping areas in PET brain maps between patients with these outcomes.

The investigations showed that obesity maps were highly correlated with AD maps, but not with amyloid-beta or tau protein maps. The researchers also found significant correlations between obesity and the lean individuals with AD.

Brain regions with the highest similarities between obesity and AD were located mainly in the left temporal and bilateral prefrontal cortices.

“Our research confirms that obesity-related gray matter atrophy resembles that of AD,” the authors concluded. “Excess weight management could lead to improved health outcomes, slow down cognitive decline in aging, and lower the risk for AD.”

Upcoming research “will focus on investigating how weight loss can affect the risk for AD, other dementias, and cognitive decline in general,” said Dr. Morys. “At this point, our study suggests that obesity prevention, weight loss, but also decreasing other metabolic risk factors related to obesity, such as type-2 diabetes or hypertension, might reduce the risk for AD and have beneficial effects on cognition.”
 

Lifestyle habits

Commenting on the findings, Claire Sexton, DPhil, vice president of scientific programs and outreach at the Alzheimer’s Association, cautioned that a single cross-sectional study isn’t conclusive. “Previous studies have illustrated that the relationship between obesity and dementia is complex. Growing evidence indicates that people can reduce their risk of cognitive decline by adopting key lifestyle habits, like regular exercise, a heart-healthy diet and staying socially and cognitively engaged.”

The Alzheimer’s Association is leading a 2-year clinical trial, U.S. Pointer, to study how targeting these risk factors in combination may reduce risk for cognitive decline in older adults.

The work was supported by a Foundation Scheme award from the Canadian Institutes of Health Research. Dr. Morys received a postdoctoral fellowship from Fonds de Recherche du Quebec – Santé. Data collection and sharing were funded by the Alzheimer’s Disease Neuroimaging Initiative, the National Institute on Aging, the National Institute of Biomedical Imaging and Bioengineering, and multiple pharmaceutical companies and other private sector organizations. Dr. Morys and Dr. Sexton reported no relevant financial relationships.

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

Brain atrophy patterns are similar in individuals with obesity and those with Alzheimer’s disease (AD), a new study shows.

Comparisons of MRI scans for more than 1,000 participants indicate correlations between the two conditions, especially in areas of gray matter thinning, suggesting that managing excess weight might slow cognitive decline and lower the risk for AD, according to the researchers.

However, brain maps of obesity did not correlate with maps of amyloid or tau protein accumulation.

“The fact that obesity-related brain atrophy did not correlate with the distribution of amyloid and tau proteins in AD was not what we expected,” study author Filip Morys, PhD, a postdoctoral researcher at McGill University, Montreal, said in an interview. “But it might just show that the specific mechanisms underpinning obesity- and Alzheimer’s disease–related neurodegeneration are different. This remains to be confirmed.”

The study was published in the Journal of Alzheimer’s Disease.
 

Cortical Thinning

The current study was prompted by the team’s earlier study, which showed that obesity-related neurodegeneration patterns were visually similar to those of AD, said Dr. Morys. “It was known previously that obesity is a risk factor for AD, but we wanted to directly compare brain atrophy patterns in both, which is what we did in this new study.”

The researchers analyzed data from a pooled sample of more than 1,300 participants. From the ADNI database, the researchers selected participants with AD and age- and sex-matched cognitively healthy controls. From the UK Biobank, the researchers drew a sample of lean, overweight, and obese participants without neurologic disease.

To determine how the weight status of patients with AD affects the correspondence between AD and obesity maps, they categorized participants with AD and healthy controls from the ADNI database into lean, overweight, and obese subgroups.

Then, to investigate mechanisms that might drive the similarities between obesity-related brain atrophy and AD-related amyloid-beta accumulation, they looked for overlapping areas in PET brain maps between patients with these outcomes.

The investigations showed that obesity maps were highly correlated with AD maps, but not with amyloid-beta or tau protein maps. The researchers also found significant correlations between obesity and the lean individuals with AD.

Brain regions with the highest similarities between obesity and AD were located mainly in the left temporal and bilateral prefrontal cortices.

“Our research confirms that obesity-related gray matter atrophy resembles that of AD,” the authors concluded. “Excess weight management could lead to improved health outcomes, slow down cognitive decline in aging, and lower the risk for AD.”

Upcoming research “will focus on investigating how weight loss can affect the risk for AD, other dementias, and cognitive decline in general,” said Dr. Morys. “At this point, our study suggests that obesity prevention, weight loss, but also decreasing other metabolic risk factors related to obesity, such as type-2 diabetes or hypertension, might reduce the risk for AD and have beneficial effects on cognition.”
 

Lifestyle habits

Commenting on the findings, Claire Sexton, DPhil, vice president of scientific programs and outreach at the Alzheimer’s Association, cautioned that a single cross-sectional study isn’t conclusive. “Previous studies have illustrated that the relationship between obesity and dementia is complex. Growing evidence indicates that people can reduce their risk of cognitive decline by adopting key lifestyle habits, like regular exercise, a heart-healthy diet and staying socially and cognitively engaged.”

The Alzheimer’s Association is leading a 2-year clinical trial, U.S. Pointer, to study how targeting these risk factors in combination may reduce risk for cognitive decline in older adults.

The work was supported by a Foundation Scheme award from the Canadian Institutes of Health Research. Dr. Morys received a postdoctoral fellowship from Fonds de Recherche du Quebec – Santé. Data collection and sharing were funded by the Alzheimer’s Disease Neuroimaging Initiative, the National Institute on Aging, the National Institute of Biomedical Imaging and Bioengineering, and multiple pharmaceutical companies and other private sector organizations. Dr. Morys and Dr. Sexton reported no relevant financial relationships.

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

Brain atrophy patterns are similar in individuals with obesity and those with Alzheimer’s disease (AD), a new study shows.

Comparisons of MRI scans for more than 1,000 participants indicate correlations between the two conditions, especially in areas of gray matter thinning, suggesting that managing excess weight might slow cognitive decline and lower the risk for AD, according to the researchers.

However, brain maps of obesity did not correlate with maps of amyloid or tau protein accumulation.

“The fact that obesity-related brain atrophy did not correlate with the distribution of amyloid and tau proteins in AD was not what we expected,” study author Filip Morys, PhD, a postdoctoral researcher at McGill University, Montreal, said in an interview. “But it might just show that the specific mechanisms underpinning obesity- and Alzheimer’s disease–related neurodegeneration are different. This remains to be confirmed.”

The study was published in the Journal of Alzheimer’s Disease.
 

Cortical Thinning

The current study was prompted by the team’s earlier study, which showed that obesity-related neurodegeneration patterns were visually similar to those of AD, said Dr. Morys. “It was known previously that obesity is a risk factor for AD, but we wanted to directly compare brain atrophy patterns in both, which is what we did in this new study.”

The researchers analyzed data from a pooled sample of more than 1,300 participants. From the ADNI database, the researchers selected participants with AD and age- and sex-matched cognitively healthy controls. From the UK Biobank, the researchers drew a sample of lean, overweight, and obese participants without neurologic disease.

To determine how the weight status of patients with AD affects the correspondence between AD and obesity maps, they categorized participants with AD and healthy controls from the ADNI database into lean, overweight, and obese subgroups.

Then, to investigate mechanisms that might drive the similarities between obesity-related brain atrophy and AD-related amyloid-beta accumulation, they looked for overlapping areas in PET brain maps between patients with these outcomes.

The investigations showed that obesity maps were highly correlated with AD maps, but not with amyloid-beta or tau protein maps. The researchers also found significant correlations between obesity and the lean individuals with AD.

Brain regions with the highest similarities between obesity and AD were located mainly in the left temporal and bilateral prefrontal cortices.

“Our research confirms that obesity-related gray matter atrophy resembles that of AD,” the authors concluded. “Excess weight management could lead to improved health outcomes, slow down cognitive decline in aging, and lower the risk for AD.”

Upcoming research “will focus on investigating how weight loss can affect the risk for AD, other dementias, and cognitive decline in general,” said Dr. Morys. “At this point, our study suggests that obesity prevention, weight loss, but also decreasing other metabolic risk factors related to obesity, such as type-2 diabetes or hypertension, might reduce the risk for AD and have beneficial effects on cognition.”
 

Lifestyle habits

Commenting on the findings, Claire Sexton, DPhil, vice president of scientific programs and outreach at the Alzheimer’s Association, cautioned that a single cross-sectional study isn’t conclusive. “Previous studies have illustrated that the relationship between obesity and dementia is complex. Growing evidence indicates that people can reduce their risk of cognitive decline by adopting key lifestyle habits, like regular exercise, a heart-healthy diet and staying socially and cognitively engaged.”

The Alzheimer’s Association is leading a 2-year clinical trial, U.S. Pointer, to study how targeting these risk factors in combination may reduce risk for cognitive decline in older adults.

The work was supported by a Foundation Scheme award from the Canadian Institutes of Health Research. Dr. Morys received a postdoctoral fellowship from Fonds de Recherche du Quebec – Santé. Data collection and sharing were funded by the Alzheimer’s Disease Neuroimaging Initiative, the National Institute on Aging, the National Institute of Biomedical Imaging and Bioengineering, and multiple pharmaceutical companies and other private sector organizations. Dr. Morys and Dr. Sexton reported no relevant financial relationships.

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

It’s a common scenario. A patient, Agnes, with symptoms of an upper respiratory infection (URI), but what’s the cause? Is it COVID-19, flu, or even RSV? I recently described just such a patient, an obese woman with type 2 diabetes, presenting with fever, cough, myalgia, and fatigue. I asked readers whether they agreed with my management of this patient.

Thank you for your comments as we continue to react to high rates of URIs. Your comments highlight the importance of local resources and practice habits when managing patients with URI.

It was clear that readers value testing to distinguish between infections. However, access to testing is highly variable around the world and is likely to be routinely used only in high-income countries. The Kaiser Family Foundation performed a cost analysis of testing for SARS-CoV-2 in 2020 and found, not surprisingly, wide variability in the cost of testing. Medicare covers tests at rates of $36-$143 per test; a study of list prices for SARS-CoV-2 tests at 93 hospitals found a median cost of $148 per test. And this does not include collection or facility fees. About 20% of tests cost more than $300.

These costs are prohibitive for many health systems. However, more devices have been introduced since that analysis, and competition and evolving technology should drive down prices. Generally, multiplex polymerase chain reaction (PCR) testing for multiple pathogens is less expensive than ordering two or three separate molecular tests and is more convenient for patients and practices alike.

Other reader comments focused on the challenges of getting accurate data on viral epidemiology, and there is certainly a time lag between infection trends and public health reports. This is exacerbated by underreporting of symptoms and more testing at home using antigen tests.

But please do not give up on epidemiology! If a test such as PCR is 90% sensitive for identifying infection, the yield in terms of the number of individuals infected with a particular virus should be high, and that is true when infection is in broad circulation. If 20% of a population of 1,000 has an infection and the test sensitivity is 90%, the yield of testing is 180 true cases versus 20 false positives.

However, if just 2% of the population of 1,000 has the infection in this same scenario, then only 18 true cases are identified. The effect on public health is certainly less, and a lower prevalence rate means that confounding variables, such as how long an individual might shed viral particles and the method of sample collection, have an outsized effect on results. This reduces the validity of diagnostic tests.

Even trends on a national level can provide some insight regarding whom to test. Traditionally, our practice has been to not routinely test patients for influenza or RSV from late spring to early fall unless there was a compelling reason, such as recent travel to an area where these infections were more prevalent. The loss of temporality for these infections since 2020 has altered this approach and made us pay more attention to reports from public health organizations.

I also appreciate the discussion of how to treat Agnes’s symptoms as she waits to improve, and anyone who suffers with or treats a viral URI knows that there are few interventions effective for such symptoms as cough and congestion. A systematic review of 29 randomized controlled trials of over-the-counter medications for cough yielded mixed and largely negative results.

Antihistamines alone do not seem to work, and guaifenesin was successful in only one of three trials. Combinations of different drug classes appeared to be slightly more effective.

My personal favorite for the management of acute cough is something that kids generally love: honey. In a review of 14 studies, 9 of which were limited to pediatric patients, honey was associated with significant reductions in cough frequency, cough severity, and total symptom score. However, there was a moderate risk of bias in the included research, and evidence of honey’s benefit in placebo-controlled trials was limited. Honey used in this research came in a variety of forms, so the best dosage is uncertain.

Clearly, advancements are needed. Better symptom management in viral URI will almost certainly improve productivity across the population and will probably reduce the inappropriate use of antibiotics as well. I have said for years that the scientists who can solve the Gordian knot of pediatric mucus deserve three Nobel prizes. I look forward to that golden day.

Dr. Vega is a clinical professor of family medicine at the University of California, Irvine. He reported a conflict of interest with McNeil Pharmaceuticals.

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

It’s a common scenario. A patient, Agnes, with symptoms of an upper respiratory infection (URI), but what’s the cause? Is it COVID-19, flu, or even RSV? I recently described just such a patient, an obese woman with type 2 diabetes, presenting with fever, cough, myalgia, and fatigue. I asked readers whether they agreed with my management of this patient.

Thank you for your comments as we continue to react to high rates of URIs. Your comments highlight the importance of local resources and practice habits when managing patients with URI.

It was clear that readers value testing to distinguish between infections. However, access to testing is highly variable around the world and is likely to be routinely used only in high-income countries. The Kaiser Family Foundation performed a cost analysis of testing for SARS-CoV-2 in 2020 and found, not surprisingly, wide variability in the cost of testing. Medicare covers tests at rates of $36-$143 per test; a study of list prices for SARS-CoV-2 tests at 93 hospitals found a median cost of $148 per test. And this does not include collection or facility fees. About 20% of tests cost more than $300.

These costs are prohibitive for many health systems. However, more devices have been introduced since that analysis, and competition and evolving technology should drive down prices. Generally, multiplex polymerase chain reaction (PCR) testing for multiple pathogens is less expensive than ordering two or three separate molecular tests and is more convenient for patients and practices alike.

Other reader comments focused on the challenges of getting accurate data on viral epidemiology, and there is certainly a time lag between infection trends and public health reports. This is exacerbated by underreporting of symptoms and more testing at home using antigen tests.

But please do not give up on epidemiology! If a test such as PCR is 90% sensitive for identifying infection, the yield in terms of the number of individuals infected with a particular virus should be high, and that is true when infection is in broad circulation. If 20% of a population of 1,000 has an infection and the test sensitivity is 90%, the yield of testing is 180 true cases versus 20 false positives.

However, if just 2% of the population of 1,000 has the infection in this same scenario, then only 18 true cases are identified. The effect on public health is certainly less, and a lower prevalence rate means that confounding variables, such as how long an individual might shed viral particles and the method of sample collection, have an outsized effect on results. This reduces the validity of diagnostic tests.

Even trends on a national level can provide some insight regarding whom to test. Traditionally, our practice has been to not routinely test patients for influenza or RSV from late spring to early fall unless there was a compelling reason, such as recent travel to an area where these infections were more prevalent. The loss of temporality for these infections since 2020 has altered this approach and made us pay more attention to reports from public health organizations.

I also appreciate the discussion of how to treat Agnes’s symptoms as she waits to improve, and anyone who suffers with or treats a viral URI knows that there are few interventions effective for such symptoms as cough and congestion. A systematic review of 29 randomized controlled trials of over-the-counter medications for cough yielded mixed and largely negative results.

Antihistamines alone do not seem to work, and guaifenesin was successful in only one of three trials. Combinations of different drug classes appeared to be slightly more effective.

My personal favorite for the management of acute cough is something that kids generally love: honey. In a review of 14 studies, 9 of which were limited to pediatric patients, honey was associated with significant reductions in cough frequency, cough severity, and total symptom score. However, there was a moderate risk of bias in the included research, and evidence of honey’s benefit in placebo-controlled trials was limited. Honey used in this research came in a variety of forms, so the best dosage is uncertain.

Clearly, advancements are needed. Better symptom management in viral URI will almost certainly improve productivity across the population and will probably reduce the inappropriate use of antibiotics as well. I have said for years that the scientists who can solve the Gordian knot of pediatric mucus deserve three Nobel prizes. I look forward to that golden day.

Dr. Vega is a clinical professor of family medicine at the University of California, Irvine. He reported a conflict of interest with McNeil Pharmaceuticals.

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

It’s a common scenario. A patient, Agnes, with symptoms of an upper respiratory infection (URI), but what’s the cause? Is it COVID-19, flu, or even RSV? I recently described just such a patient, an obese woman with type 2 diabetes, presenting with fever, cough, myalgia, and fatigue. I asked readers whether they agreed with my management of this patient.

Thank you for your comments as we continue to react to high rates of URIs. Your comments highlight the importance of local resources and practice habits when managing patients with URI.

It was clear that readers value testing to distinguish between infections. However, access to testing is highly variable around the world and is likely to be routinely used only in high-income countries. The Kaiser Family Foundation performed a cost analysis of testing for SARS-CoV-2 in 2020 and found, not surprisingly, wide variability in the cost of testing. Medicare covers tests at rates of $36-$143 per test; a study of list prices for SARS-CoV-2 tests at 93 hospitals found a median cost of $148 per test. And this does not include collection or facility fees. About 20% of tests cost more than $300.

These costs are prohibitive for many health systems. However, more devices have been introduced since that analysis, and competition and evolving technology should drive down prices. Generally, multiplex polymerase chain reaction (PCR) testing for multiple pathogens is less expensive than ordering two or three separate molecular tests and is more convenient for patients and practices alike.

Other reader comments focused on the challenges of getting accurate data on viral epidemiology, and there is certainly a time lag between infection trends and public health reports. This is exacerbated by underreporting of symptoms and more testing at home using antigen tests.

But please do not give up on epidemiology! If a test such as PCR is 90% sensitive for identifying infection, the yield in terms of the number of individuals infected with a particular virus should be high, and that is true when infection is in broad circulation. If 20% of a population of 1,000 has an infection and the test sensitivity is 90%, the yield of testing is 180 true cases versus 20 false positives.

However, if just 2% of the population of 1,000 has the infection in this same scenario, then only 18 true cases are identified. The effect on public health is certainly less, and a lower prevalence rate means that confounding variables, such as how long an individual might shed viral particles and the method of sample collection, have an outsized effect on results. This reduces the validity of diagnostic tests.

Even trends on a national level can provide some insight regarding whom to test. Traditionally, our practice has been to not routinely test patients for influenza or RSV from late spring to early fall unless there was a compelling reason, such as recent travel to an area where these infections were more prevalent. The loss of temporality for these infections since 2020 has altered this approach and made us pay more attention to reports from public health organizations.

I also appreciate the discussion of how to treat Agnes’s symptoms as she waits to improve, and anyone who suffers with or treats a viral URI knows that there are few interventions effective for such symptoms as cough and congestion. A systematic review of 29 randomized controlled trials of over-the-counter medications for cough yielded mixed and largely negative results.

Antihistamines alone do not seem to work, and guaifenesin was successful in only one of three trials. Combinations of different drug classes appeared to be slightly more effective.

My personal favorite for the management of acute cough is something that kids generally love: honey. In a review of 14 studies, 9 of which were limited to pediatric patients, honey was associated with significant reductions in cough frequency, cough severity, and total symptom score. However, there was a moderate risk of bias in the included research, and evidence of honey’s benefit in placebo-controlled trials was limited. Honey used in this research came in a variety of forms, so the best dosage is uncertain.

Clearly, advancements are needed. Better symptom management in viral URI will almost certainly improve productivity across the population and will probably reduce the inappropriate use of antibiotics as well. I have said for years that the scientists who can solve the Gordian knot of pediatric mucus deserve three Nobel prizes. I look forward to that golden day.

Dr. Vega is a clinical professor of family medicine at the University of California, Irvine. He reported a conflict of interest with McNeil Pharmaceuticals.

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

The introduction of the soft drinks industry levy (SDIL) – dubbed the ‘sugar tax’ – in England was followed by a drop in the number of older primary school girls succumbing to obesity, according to researchers from the Universities of Cambridge, Oxford, and Bath, with colleagues at the London School of Hygiene and Tropical Medicine.

The study, published in PLOS Medicine, has led to calls to extend the levy to other unhealthy foods and drinks

Obesity has become a global public health problem, the researchers said. In England, around 10% of 4- to 5-year-old children and 20% of 10- to 11-year-olds were recorded as obese in 2020. Childhood obesity is associated with depression in children and the adults into which they maturate, as well as with serious health problems in later life including high blood pressure and type 2 diabetes.

In the United Kingdom, young people consume significantly more added sugars than are recommended – by late adolescence, typically 70 g of added sugar per day, more than double the recommended 30g. The team said that sugar-sweetened beverages (SSB) are the primary sources of dietary added sugars in children, with high consumption commonly observed in more deprived areas where obesity prevalence is also highest.
 

Protecting children from excessive sugar

The two-tier SDIL on drinks manufacturers was implemented in April 2018 and aimed to protect children from excessive sugar consumption and tackle childhood obesity by incentivizing reformulation of SSBs in the U.K. with reduced sugar content.

To assess the effects of SDIL, the researchers used data from the National Child Measurement Programme on over 1 million children at ages 4 to 5 years (reception class) and 10 to 11 years (school year 6) in state-maintained English primary schools. The surveillance program includes annual repeat cross-sectional measurements, enabling the researchers to examine trajectories in monthly prevalence of obesity from September 2013 to November 2019, 19 months after the implementation of the SDIL.

Taking account of previous trends in obesity levels, they estimated both absolute and relative changes in obesity prevalence, both overall and by sex and deprivation, and compared obesity levels after the SDIL with predicted levels had the tax not been introduced, controlling for children’s sex and the level of deprivation of their school area.

Although they found no significant association with obesity levels in reception-age children or year-6 boys, they noted an overall absolute reduction in obesity prevalence of 1.6 percentage points (PPs) (95% confidence interval, 1.1-2.1) in 10- to 11-year-old (year 6) girls. This equated to an 8% relative reduction in obesity rates compared with a counterfactual estimated from the trend prior to the SDIL announcement in March 2016, adjusted for temporal variations in obesity prevalence.

The researchers estimated that this was equivalent to preventing 5,234 cases of obesity per year in this group of year-6 girls alone.
 

Obesity reductions greatest in most deprived areas

Reductions were greatest in girls whose schools were in the most deprived areas, where children are known to consume the largest amount of sugary drinks. The greatest reductions in obesity were observed in the two most deprived quintiles – such that in the lowest quintile the absolute obesity prevalence reduction was 2.4 PP (95% CI, 1.6-3.2), equivalent to a 9% reduction in those living in the most deprived areas.

There are several reasons why the sugar tax did not lead to changes in levels of obesity among the younger children, the researchers said. Very young children consume fewer sugar-sweetened drinks than older children, so the soft drinks levy would have had a smaller effect. Also, fruit juices are not included in the levy, but contribute similar amounts of sugar in young children’s diets as do sugar-sweetened beverages.
 

Advertising may impact consumption in boys

It’s also unclear why the sugar tax might affect obesity prevalence in girls and boys differently, they said, especially since boys are higher consumers of sugar-sweetened beverages. One explanation is the possible impact of advertising – numerous studies have found that boys are often exposed to more food advertising than girls, both through higher levels of TV viewing and in how adverts are framed. Physical activity is often used to promote junk food and boys, compared with girls, have been shown to be more likely to believe that energy-dense junk foods depicted in adverts will boost physical performance, and so are more likely to choose energy-dense, nutrient-poor products following celebrity endorsements.

Tax ‘led to positive health impacts’

“Our findings suggest that the U.K. SDIL led to positive health impacts in the form of reduced obesity levels in girls aged 10-11 years,” the authors said. However: “Additional strategies beyond SSB taxation will be needed to reduce obesity prevalence overall, and particularly in older boys and younger children.”

Dr. Nina Rogers from the MRC Epidemiology Unit at Cambridge (England), who led the study, said: “We urgently need to find ways to tackle the increasing numbers of children living with obesity, otherwise we risk our children growing up to face significant health problems. That was one reason why the U.K.’s SDIL was introduced, and the evidence so far is promising. We’ve shown for the first time that it is likely to have helped prevent thousands of children each year becoming obese.

“It isn’t a straightforward picture, though, as it was mainly older girls who benefited. But the fact that we saw the biggest difference among girls from areas of high deprivation is important and is a step towards reducing the health inequalities they face.”

Although the researchers found an association rather than a causal link, this study adds to previous findings that the levy was associated with a substantial reduction in the amount of sugar in soft drinks.

Senior author Professor Jean Adams from the MRC Epidemiology Unit said: “We know that consuming too many sugary drinks contributes to obesity and that the U.K. soft drinks levy led to a drop in the amount of sugar in soft drinks available in the U.K., so it makes sense that we also see a drop in cases of obesity, although we only found this in girls. Children from more deprived backgrounds tend to consume the largest amount of sugary drinks, and it was among girls in this group that we saw the biggest change.”

Tom Sanders, professor emeritus of nutrition and dietetics at King’s College London, said: “The claim that the soft drink levy might have prevented 5,000 children from becoming obese is speculative because it is based on an association not actual measurements of consumption.”

He added that: “As well as continuing to discourage the consumption of sugar sweetened beverages and sweets, wider recognition should be given to foods such as biscuits [and] deep-fried foods (crisps, corn snacks, chips) that make [a] bigger contribution to excess calorie intake in children. Tackling poverty, however, is probably [the] best way to improve the diets of socially deprived children.”
 

Government ‘should learn from this success’

Asked to comment by this news organization, Katharine Jenner, director of the Obesity Health Alliance, said: “Government should be heartened that their soft drinks policy is already improving the health of young girls, regardless of where they live. The government should learn from this success, especially when compared with the many unsuccessful attempts to persuade industry to change their products voluntarily.  They must now press ahead with policies that make it easier for everyone to eat a healthier diet, including extending the soft drinks industry levy to include other less healthy foods and drinks and measures to take junk food out of the spotlight. 

“The research notes that numerous studies have found that boys are often exposed to more food advertising content than girls, negating the impact of the soft drinks levy [so] we need restriction on junk food marketing now, to put healthy food back in the spotlight.”

The research was supported by the National Institute of Health and Care Research and the Medical Research Council.

A version of this article originally appeared on MedscapeUK.

The introduction of the soft drinks industry levy (SDIL) – dubbed the ‘sugar tax’ – in England was followed by a drop in the number of older primary school girls succumbing to obesity, according to researchers from the Universities of Cambridge, Oxford, and Bath, with colleagues at the London School of Hygiene and Tropical Medicine.

The study, published in PLOS Medicine, has led to calls to extend the levy to other unhealthy foods and drinks

Obesity has become a global public health problem, the researchers said. In England, around 10% of 4- to 5-year-old children and 20% of 10- to 11-year-olds were recorded as obese in 2020. Childhood obesity is associated with depression in children and the adults into which they maturate, as well as with serious health problems in later life including high blood pressure and type 2 diabetes.

In the United Kingdom, young people consume significantly more added sugars than are recommended – by late adolescence, typically 70 g of added sugar per day, more than double the recommended 30g. The team said that sugar-sweetened beverages (SSB) are the primary sources of dietary added sugars in children, with high consumption commonly observed in more deprived areas where obesity prevalence is also highest.
 

Protecting children from excessive sugar

The two-tier SDIL on drinks manufacturers was implemented in April 2018 and aimed to protect children from excessive sugar consumption and tackle childhood obesity by incentivizing reformulation of SSBs in the U.K. with reduced sugar content.

To assess the effects of SDIL, the researchers used data from the National Child Measurement Programme on over 1 million children at ages 4 to 5 years (reception class) and 10 to 11 years (school year 6) in state-maintained English primary schools. The surveillance program includes annual repeat cross-sectional measurements, enabling the researchers to examine trajectories in monthly prevalence of obesity from September 2013 to November 2019, 19 months after the implementation of the SDIL.

Taking account of previous trends in obesity levels, they estimated both absolute and relative changes in obesity prevalence, both overall and by sex and deprivation, and compared obesity levels after the SDIL with predicted levels had the tax not been introduced, controlling for children’s sex and the level of deprivation of their school area.

Although they found no significant association with obesity levels in reception-age children or year-6 boys, they noted an overall absolute reduction in obesity prevalence of 1.6 percentage points (PPs) (95% confidence interval, 1.1-2.1) in 10- to 11-year-old (year 6) girls. This equated to an 8% relative reduction in obesity rates compared with a counterfactual estimated from the trend prior to the SDIL announcement in March 2016, adjusted for temporal variations in obesity prevalence.

The researchers estimated that this was equivalent to preventing 5,234 cases of obesity per year in this group of year-6 girls alone.
 

Obesity reductions greatest in most deprived areas

Reductions were greatest in girls whose schools were in the most deprived areas, where children are known to consume the largest amount of sugary drinks. The greatest reductions in obesity were observed in the two most deprived quintiles – such that in the lowest quintile the absolute obesity prevalence reduction was 2.4 PP (95% CI, 1.6-3.2), equivalent to a 9% reduction in those living in the most deprived areas.

There are several reasons why the sugar tax did not lead to changes in levels of obesity among the younger children, the researchers said. Very young children consume fewer sugar-sweetened drinks than older children, so the soft drinks levy would have had a smaller effect. Also, fruit juices are not included in the levy, but contribute similar amounts of sugar in young children’s diets as do sugar-sweetened beverages.
 

Advertising may impact consumption in boys

It’s also unclear why the sugar tax might affect obesity prevalence in girls and boys differently, they said, especially since boys are higher consumers of sugar-sweetened beverages. One explanation is the possible impact of advertising – numerous studies have found that boys are often exposed to more food advertising than girls, both through higher levels of TV viewing and in how adverts are framed. Physical activity is often used to promote junk food and boys, compared with girls, have been shown to be more likely to believe that energy-dense junk foods depicted in adverts will boost physical performance, and so are more likely to choose energy-dense, nutrient-poor products following celebrity endorsements.

Tax ‘led to positive health impacts’

“Our findings suggest that the U.K. SDIL led to positive health impacts in the form of reduced obesity levels in girls aged 10-11 years,” the authors said. However: “Additional strategies beyond SSB taxation will be needed to reduce obesity prevalence overall, and particularly in older boys and younger children.”

Dr. Nina Rogers from the MRC Epidemiology Unit at Cambridge (England), who led the study, said: “We urgently need to find ways to tackle the increasing numbers of children living with obesity, otherwise we risk our children growing up to face significant health problems. That was one reason why the U.K.’s SDIL was introduced, and the evidence so far is promising. We’ve shown for the first time that it is likely to have helped prevent thousands of children each year becoming obese.

“It isn’t a straightforward picture, though, as it was mainly older girls who benefited. But the fact that we saw the biggest difference among girls from areas of high deprivation is important and is a step towards reducing the health inequalities they face.”

Although the researchers found an association rather than a causal link, this study adds to previous findings that the levy was associated with a substantial reduction in the amount of sugar in soft drinks.

Senior author Professor Jean Adams from the MRC Epidemiology Unit said: “We know that consuming too many sugary drinks contributes to obesity and that the U.K. soft drinks levy led to a drop in the amount of sugar in soft drinks available in the U.K., so it makes sense that we also see a drop in cases of obesity, although we only found this in girls. Children from more deprived backgrounds tend to consume the largest amount of sugary drinks, and it was among girls in this group that we saw the biggest change.”

Tom Sanders, professor emeritus of nutrition and dietetics at King’s College London, said: “The claim that the soft drink levy might have prevented 5,000 children from becoming obese is speculative because it is based on an association not actual measurements of consumption.”

He added that: “As well as continuing to discourage the consumption of sugar sweetened beverages and sweets, wider recognition should be given to foods such as biscuits [and] deep-fried foods (crisps, corn snacks, chips) that make [a] bigger contribution to excess calorie intake in children. Tackling poverty, however, is probably [the] best way to improve the diets of socially deprived children.”
 

Government ‘should learn from this success’

Asked to comment by this news organization, Katharine Jenner, director of the Obesity Health Alliance, said: “Government should be heartened that their soft drinks policy is already improving the health of young girls, regardless of where they live. The government should learn from this success, especially when compared with the many unsuccessful attempts to persuade industry to change their products voluntarily.  They must now press ahead with policies that make it easier for everyone to eat a healthier diet, including extending the soft drinks industry levy to include other less healthy foods and drinks and measures to take junk food out of the spotlight. 

“The research notes that numerous studies have found that boys are often exposed to more food advertising content than girls, negating the impact of the soft drinks levy [so] we need restriction on junk food marketing now, to put healthy food back in the spotlight.”

The research was supported by the National Institute of Health and Care Research and the Medical Research Council.

A version of this article originally appeared on MedscapeUK.

The introduction of the soft drinks industry levy (SDIL) – dubbed the ‘sugar tax’ – in England was followed by a drop in the number of older primary school girls succumbing to obesity, according to researchers from the Universities of Cambridge, Oxford, and Bath, with colleagues at the London School of Hygiene and Tropical Medicine.

The study, published in PLOS Medicine, has led to calls to extend the levy to other unhealthy foods and drinks

Obesity has become a global public health problem, the researchers said. In England, around 10% of 4- to 5-year-old children and 20% of 10- to 11-year-olds were recorded as obese in 2020. Childhood obesity is associated with depression in children and the adults into which they maturate, as well as with serious health problems in later life including high blood pressure and type 2 diabetes.

In the United Kingdom, young people consume significantly more added sugars than are recommended – by late adolescence, typically 70 g of added sugar per day, more than double the recommended 30g. The team said that sugar-sweetened beverages (SSB) are the primary sources of dietary added sugars in children, with high consumption commonly observed in more deprived areas where obesity prevalence is also highest.
 

Protecting children from excessive sugar

The two-tier SDIL on drinks manufacturers was implemented in April 2018 and aimed to protect children from excessive sugar consumption and tackle childhood obesity by incentivizing reformulation of SSBs in the U.K. with reduced sugar content.

To assess the effects of SDIL, the researchers used data from the National Child Measurement Programme on over 1 million children at ages 4 to 5 years (reception class) and 10 to 11 years (school year 6) in state-maintained English primary schools. The surveillance program includes annual repeat cross-sectional measurements, enabling the researchers to examine trajectories in monthly prevalence of obesity from September 2013 to November 2019, 19 months after the implementation of the SDIL.

Taking account of previous trends in obesity levels, they estimated both absolute and relative changes in obesity prevalence, both overall and by sex and deprivation, and compared obesity levels after the SDIL with predicted levels had the tax not been introduced, controlling for children’s sex and the level of deprivation of their school area.

Although they found no significant association with obesity levels in reception-age children or year-6 boys, they noted an overall absolute reduction in obesity prevalence of 1.6 percentage points (PPs) (95% confidence interval, 1.1-2.1) in 10- to 11-year-old (year 6) girls. This equated to an 8% relative reduction in obesity rates compared with a counterfactual estimated from the trend prior to the SDIL announcement in March 2016, adjusted for temporal variations in obesity prevalence.

The researchers estimated that this was equivalent to preventing 5,234 cases of obesity per year in this group of year-6 girls alone.
 

Obesity reductions greatest in most deprived areas

Reductions were greatest in girls whose schools were in the most deprived areas, where children are known to consume the largest amount of sugary drinks. The greatest reductions in obesity were observed in the two most deprived quintiles – such that in the lowest quintile the absolute obesity prevalence reduction was 2.4 PP (95% CI, 1.6-3.2), equivalent to a 9% reduction in those living in the most deprived areas.

There are several reasons why the sugar tax did not lead to changes in levels of obesity among the younger children, the researchers said. Very young children consume fewer sugar-sweetened drinks than older children, so the soft drinks levy would have had a smaller effect. Also, fruit juices are not included in the levy, but contribute similar amounts of sugar in young children’s diets as do sugar-sweetened beverages.
 

Advertising may impact consumption in boys

It’s also unclear why the sugar tax might affect obesity prevalence in girls and boys differently, they said, especially since boys are higher consumers of sugar-sweetened beverages. One explanation is the possible impact of advertising – numerous studies have found that boys are often exposed to more food advertising than girls, both through higher levels of TV viewing and in how adverts are framed. Physical activity is often used to promote junk food and boys, compared with girls, have been shown to be more likely to believe that energy-dense junk foods depicted in adverts will boost physical performance, and so are more likely to choose energy-dense, nutrient-poor products following celebrity endorsements.

Tax ‘led to positive health impacts’

“Our findings suggest that the U.K. SDIL led to positive health impacts in the form of reduced obesity levels in girls aged 10-11 years,” the authors said. However: “Additional strategies beyond SSB taxation will be needed to reduce obesity prevalence overall, and particularly in older boys and younger children.”

Dr. Nina Rogers from the MRC Epidemiology Unit at Cambridge (England), who led the study, said: “We urgently need to find ways to tackle the increasing numbers of children living with obesity, otherwise we risk our children growing up to face significant health problems. That was one reason why the U.K.’s SDIL was introduced, and the evidence so far is promising. We’ve shown for the first time that it is likely to have helped prevent thousands of children each year becoming obese.

“It isn’t a straightforward picture, though, as it was mainly older girls who benefited. But the fact that we saw the biggest difference among girls from areas of high deprivation is important and is a step towards reducing the health inequalities they face.”

Although the researchers found an association rather than a causal link, this study adds to previous findings that the levy was associated with a substantial reduction in the amount of sugar in soft drinks.

Senior author Professor Jean Adams from the MRC Epidemiology Unit said: “We know that consuming too many sugary drinks contributes to obesity and that the U.K. soft drinks levy led to a drop in the amount of sugar in soft drinks available in the U.K., so it makes sense that we also see a drop in cases of obesity, although we only found this in girls. Children from more deprived backgrounds tend to consume the largest amount of sugary drinks, and it was among girls in this group that we saw the biggest change.”

Tom Sanders, professor emeritus of nutrition and dietetics at King’s College London, said: “The claim that the soft drink levy might have prevented 5,000 children from becoming obese is speculative because it is based on an association not actual measurements of consumption.”

He added that: “As well as continuing to discourage the consumption of sugar sweetened beverages and sweets, wider recognition should be given to foods such as biscuits [and] deep-fried foods (crisps, corn snacks, chips) that make [a] bigger contribution to excess calorie intake in children. Tackling poverty, however, is probably [the] best way to improve the diets of socially deprived children.”
 

Government ‘should learn from this success’

Asked to comment by this news organization, Katharine Jenner, director of the Obesity Health Alliance, said: “Government should be heartened that their soft drinks policy is already improving the health of young girls, regardless of where they live. The government should learn from this success, especially when compared with the many unsuccessful attempts to persuade industry to change their products voluntarily.  They must now press ahead with policies that make it easier for everyone to eat a healthier diet, including extending the soft drinks industry levy to include other less healthy foods and drinks and measures to take junk food out of the spotlight. 

“The research notes that numerous studies have found that boys are often exposed to more food advertising content than girls, negating the impact of the soft drinks levy [so] we need restriction on junk food marketing now, to put healthy food back in the spotlight.”

The research was supported by the National Institute of Health and Care Research and the Medical Research Council.

A version of this article originally appeared on MedscapeUK.

Apparently, offering children effective treatments for a chronic disease that markedly increases their risk for other chronic diseases, regularly erodes their quality of life, and is the No. 1 target of school-based bullying is wrong.

At least that’s my take watching the coverage of the recent American Academy of Pediatrics new pediatric obesity treatment guidelines that, gasp, suggest that children whose severity of obesity warrants medication or surgeries be offered medication or surgery. Because it’s wiser to not try to treat the obesity that›s contributing to a child’s type 2 diabetes, hypertension, fatty liver disease, or reduced quality of life?

The reaction isn’t surprising. Some of those who are up in arms about it have clinical or research careers dependent on championing their own favorite dietary strategies as if they are more effective and reproducible than decades of uniformly disappointing studies proving that they’re not. Others are upset because, for reasons that at times may be personal and at times may be conflicted, they believe that obesity should not be treated and/or that sustained weight loss is impossible. But overarchingly, probably the bulk of the hoopla stems from obesity being seen as a moral failing. Because the notion that those who suffer with obesity are themselves to blame has been the prevailing societal view for decades, if not centuries.

Working with families of children with obesity severe enough for them to seek help, it’s clear that if desire were sufficient to will it away, we wouldn’t need treatment guidelines let alone medications or surgery. Near uniformly, parents describe their children being bullied consequent to and being deeply self-conscious of their weight.

And what would those who think children shouldn’t be offered reproducibly effective treatment for obesity have them do about it? Many seem to think it would be preferable for kids to be placed on formal diets and, of course, that they should go out and play more. And though I’m all for encouraging the improvement of a child’s dietary quality and activity level, anyone suggesting those as panaceas for childhood obesity haven’t a clue. Not to mention the fact that, in most cases, improving overall dietary quality, something worthwhile at any weight, isn’t the dietary goal being recommended. Instead, the prescription seems to be restrictive dieting coupled with overexercising, which, unlike appropriately and thoughtfully informed and utilized medication, may increase a child’s risk of maladaptive thinking around food and fitness as well as disordered eating, not to mention challenge their self-esteem if their lifestyle results are underwhelming.

This brings us to one of the most bizarre takes on this whole business – that medications will be pushed and used when not necessary. No doubt that at times, that may occur, but the issue is that of a clinician’s overzealous prescribing and not of the treatment options or indications. Consider childhood asthma. There is no worry or uproar that children with mild asthma that isn’t having an impact on their quality of life or markedly risking their health will be placed on multiple inhaled steroids and treatments. Why? Because clinicians have been taught how to dispassionately evaluate treatment needs for asthma, monitor disease course, and not simply prescribe everything in our armamentarium.

Shocking, I know, but as is the case with every other medical condition, I think doctors are capable of learning and following an algorithm covering the indications and options for the treatment of childhood obesity.

How that looks also mirrors what’s seen with any other chronic noncommunicable disease with varied severity and impact. Doctors will evaluate each child with obesity to see whether it’s having a detrimental effect on their health or quality of life. They will monitor their patients’ obesity to see if it’s worsening and will, when necessary, undertake investigations to rule out its potential contribution to common comorbidities like type 2 diabetes, hypertension, and fatty liver disease. And, when appropriate, they will provide information on available treatment options – from lifestyle to medication to surgery and the risks, benefits, and realistic expectations associated with each – and then, without judgment, support their patients’ treatment choices because blame-free informed discussion and supportive prescription of care is, in fact, the distillation of our jobs.

If people are looking to be outraged rather than focusing their outrage on what we now need to do about childhood obesity, they should instead look to what got us here: our obesogenic environment. We and our children are swimming against a torrential current of cheap ultraprocessed calories being pushed upon us by a broken societal food culture that values convenience and simultaneously embraces the notion that knowledge is a match versus the thousands of genes and dozens of hormones that increasingly sophisticated food industry marketers and scientists prey upon. When dealing with torrential currents, we need to do more than just recommend swimming lessons.

Like asthma, which may be exacerbated by pollution in our environment both outdoors and indoors, childhood obesity is a modern-day environmentally influenced disease with varied penetrance that does not always require active treatment. Like asthma, childhood obesity is not a disease that children choose to have; it’s not a disease that can be willed away; and it’s not a disease that responds uniformly, dramatically, or enduringly to diet and exercise. Finally, literally and figuratively, like asthma, for childhood obesity, we thankfully now have a number of effective treatment options that we can offer, and it’s only our societal weight bias that leads to thinking that’s anything but great.

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

Apparently, offering children effective treatments for a chronic disease that markedly increases their risk for other chronic diseases, regularly erodes their quality of life, and is the No. 1 target of school-based bullying is wrong.

At least that’s my take watching the coverage of the recent American Academy of Pediatrics new pediatric obesity treatment guidelines that, gasp, suggest that children whose severity of obesity warrants medication or surgeries be offered medication or surgery. Because it’s wiser to not try to treat the obesity that›s contributing to a child’s type 2 diabetes, hypertension, fatty liver disease, or reduced quality of life?

The reaction isn’t surprising. Some of those who are up in arms about it have clinical or research careers dependent on championing their own favorite dietary strategies as if they are more effective and reproducible than decades of uniformly disappointing studies proving that they’re not. Others are upset because, for reasons that at times may be personal and at times may be conflicted, they believe that obesity should not be treated and/or that sustained weight loss is impossible. But overarchingly, probably the bulk of the hoopla stems from obesity being seen as a moral failing. Because the notion that those who suffer with obesity are themselves to blame has been the prevailing societal view for decades, if not centuries.

Working with families of children with obesity severe enough for them to seek help, it’s clear that if desire were sufficient to will it away, we wouldn’t need treatment guidelines let alone medications or surgery. Near uniformly, parents describe their children being bullied consequent to and being deeply self-conscious of their weight.

And what would those who think children shouldn’t be offered reproducibly effective treatment for obesity have them do about it? Many seem to think it would be preferable for kids to be placed on formal diets and, of course, that they should go out and play more. And though I’m all for encouraging the improvement of a child’s dietary quality and activity level, anyone suggesting those as panaceas for childhood obesity haven’t a clue. Not to mention the fact that, in most cases, improving overall dietary quality, something worthwhile at any weight, isn’t the dietary goal being recommended. Instead, the prescription seems to be restrictive dieting coupled with overexercising, which, unlike appropriately and thoughtfully informed and utilized medication, may increase a child’s risk of maladaptive thinking around food and fitness as well as disordered eating, not to mention challenge their self-esteem if their lifestyle results are underwhelming.

This brings us to one of the most bizarre takes on this whole business – that medications will be pushed and used when not necessary. No doubt that at times, that may occur, but the issue is that of a clinician’s overzealous prescribing and not of the treatment options or indications. Consider childhood asthma. There is no worry or uproar that children with mild asthma that isn’t having an impact on their quality of life or markedly risking their health will be placed on multiple inhaled steroids and treatments. Why? Because clinicians have been taught how to dispassionately evaluate treatment needs for asthma, monitor disease course, and not simply prescribe everything in our armamentarium.

Shocking, I know, but as is the case with every other medical condition, I think doctors are capable of learning and following an algorithm covering the indications and options for the treatment of childhood obesity.

How that looks also mirrors what’s seen with any other chronic noncommunicable disease with varied severity and impact. Doctors will evaluate each child with obesity to see whether it’s having a detrimental effect on their health or quality of life. They will monitor their patients’ obesity to see if it’s worsening and will, when necessary, undertake investigations to rule out its potential contribution to common comorbidities like type 2 diabetes, hypertension, and fatty liver disease. And, when appropriate, they will provide information on available treatment options – from lifestyle to medication to surgery and the risks, benefits, and realistic expectations associated with each – and then, without judgment, support their patients’ treatment choices because blame-free informed discussion and supportive prescription of care is, in fact, the distillation of our jobs.

If people are looking to be outraged rather than focusing their outrage on what we now need to do about childhood obesity, they should instead look to what got us here: our obesogenic environment. We and our children are swimming against a torrential current of cheap ultraprocessed calories being pushed upon us by a broken societal food culture that values convenience and simultaneously embraces the notion that knowledge is a match versus the thousands of genes and dozens of hormones that increasingly sophisticated food industry marketers and scientists prey upon. When dealing with torrential currents, we need to do more than just recommend swimming lessons.

Like asthma, which may be exacerbated by pollution in our environment both outdoors and indoors, childhood obesity is a modern-day environmentally influenced disease with varied penetrance that does not always require active treatment. Like asthma, childhood obesity is not a disease that children choose to have; it’s not a disease that can be willed away; and it’s not a disease that responds uniformly, dramatically, or enduringly to diet and exercise. Finally, literally and figuratively, like asthma, for childhood obesity, we thankfully now have a number of effective treatment options that we can offer, and it’s only our societal weight bias that leads to thinking that’s anything but great.

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

Apparently, offering children effective treatments for a chronic disease that markedly increases their risk for other chronic diseases, regularly erodes their quality of life, and is the No. 1 target of school-based bullying is wrong.

At least that’s my take watching the coverage of the recent American Academy of Pediatrics new pediatric obesity treatment guidelines that, gasp, suggest that children whose severity of obesity warrants medication or surgeries be offered medication or surgery. Because it’s wiser to not try to treat the obesity that›s contributing to a child’s type 2 diabetes, hypertension, fatty liver disease, or reduced quality of life?

The reaction isn’t surprising. Some of those who are up in arms about it have clinical or research careers dependent on championing their own favorite dietary strategies as if they are more effective and reproducible than decades of uniformly disappointing studies proving that they’re not. Others are upset because, for reasons that at times may be personal and at times may be conflicted, they believe that obesity should not be treated and/or that sustained weight loss is impossible. But overarchingly, probably the bulk of the hoopla stems from obesity being seen as a moral failing. Because the notion that those who suffer with obesity are themselves to blame has been the prevailing societal view for decades, if not centuries.

Working with families of children with obesity severe enough for them to seek help, it’s clear that if desire were sufficient to will it away, we wouldn’t need treatment guidelines let alone medications or surgery. Near uniformly, parents describe their children being bullied consequent to and being deeply self-conscious of their weight.

And what would those who think children shouldn’t be offered reproducibly effective treatment for obesity have them do about it? Many seem to think it would be preferable for kids to be placed on formal diets and, of course, that they should go out and play more. And though I’m all for encouraging the improvement of a child’s dietary quality and activity level, anyone suggesting those as panaceas for childhood obesity haven’t a clue. Not to mention the fact that, in most cases, improving overall dietary quality, something worthwhile at any weight, isn’t the dietary goal being recommended. Instead, the prescription seems to be restrictive dieting coupled with overexercising, which, unlike appropriately and thoughtfully informed and utilized medication, may increase a child’s risk of maladaptive thinking around food and fitness as well as disordered eating, not to mention challenge their self-esteem if their lifestyle results are underwhelming.

This brings us to one of the most bizarre takes on this whole business – that medications will be pushed and used when not necessary. No doubt that at times, that may occur, but the issue is that of a clinician’s overzealous prescribing and not of the treatment options or indications. Consider childhood asthma. There is no worry or uproar that children with mild asthma that isn’t having an impact on their quality of life or markedly risking their health will be placed on multiple inhaled steroids and treatments. Why? Because clinicians have been taught how to dispassionately evaluate treatment needs for asthma, monitor disease course, and not simply prescribe everything in our armamentarium.

Shocking, I know, but as is the case with every other medical condition, I think doctors are capable of learning and following an algorithm covering the indications and options for the treatment of childhood obesity.

How that looks also mirrors what’s seen with any other chronic noncommunicable disease with varied severity and impact. Doctors will evaluate each child with obesity to see whether it’s having a detrimental effect on their health or quality of life. They will monitor their patients’ obesity to see if it’s worsening and will, when necessary, undertake investigations to rule out its potential contribution to common comorbidities like type 2 diabetes, hypertension, and fatty liver disease. And, when appropriate, they will provide information on available treatment options – from lifestyle to medication to surgery and the risks, benefits, and realistic expectations associated with each – and then, without judgment, support their patients’ treatment choices because blame-free informed discussion and supportive prescription of care is, in fact, the distillation of our jobs.

If people are looking to be outraged rather than focusing their outrage on what we now need to do about childhood obesity, they should instead look to what got us here: our obesogenic environment. We and our children are swimming against a torrential current of cheap ultraprocessed calories being pushed upon us by a broken societal food culture that values convenience and simultaneously embraces the notion that knowledge is a match versus the thousands of genes and dozens of hormones that increasingly sophisticated food industry marketers and scientists prey upon. When dealing with torrential currents, we need to do more than just recommend swimming lessons.

Like asthma, which may be exacerbated by pollution in our environment both outdoors and indoors, childhood obesity is a modern-day environmentally influenced disease with varied penetrance that does not always require active treatment. Like asthma, childhood obesity is not a disease that children choose to have; it’s not a disease that can be willed away; and it’s not a disease that responds uniformly, dramatically, or enduringly to diet and exercise. Finally, literally and figuratively, like asthma, for childhood obesity, we thankfully now have a number of effective treatment options that we can offer, and it’s only our societal weight bias that leads to thinking that’s anything but great.

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

The number of daily meals, but not the timing between first and last daily meals, was significantly associated with weight changes over a 6-year period, in a prospective study of more than 500 adults.

Some studies suggest that timing food intake – through time-restricted eating or intermittent fasting – can promote weight loss, but these strategies have yielded similar weight loss to eating throughout the day in randomized trials, and population-based studies of meal intervals and weight changes are needed, Di Zhao, PhD, of Johns Hopkins University, Baltimore, and colleagues wrote.

hayatikayha/Getty Images

“Obesity is an epidemic,” corresponding author Wendy Bennett, MD, also of Johns Hopkins University, said in an interview. “We are interested in identifying ways to prevent weight gain over time and reduce obesity risk, since telling people to ‘just eat less’ doesn’t always work.”

In a study published in the Journal of the American Heart Association, the researchers recruited 1,017 adults who were patients at one of three health systems; of these, complete data were available for 547 individuals.

The participants downloaded an app called Daily24 to record the timing of their meals and sleep for at least 1 day. The researchers used electronic medical records to obtain information on weight and comorbidities of the participants for up to 10 years before study enrollment through 10 months after enrollment.

The mean age of the participants was 51.1 years, 78% were women, and 78% were White; the mean body mass index was 30.8 kg/m².

The mean interval from first to last meal was 11.5 hours, and this was not associated with change in weight. The mean times from waking up to the first meal and the time from the last meal to sleeping were 1.6 hours and 4.0 hours, respectively, and these were not associated with weight changes over the follow-up period, the researchers wrote. Sleep duration (mean of 7.5 hours) also was not associated with weight change over time.

However, the total daily number of large and medium-sized meals was associated with weight gain over time, while those who reported more smaller meals showed weight loss. A daily increase of one large, medium, or small meal was associated with an average annual weight change of 0.69 kg, 0.97 kg, and –0.30 kg, respectively.

 

Benefits of time-restricted eating remain unclear

“Animal studies have shown benefits for time restricted feeding, but there are still questions about whether or not it helps prevent weight gain or promotes weight loss in humans,” Dr. Bennett said in an interview.

As for the current study findings, “we were not surprised; humans are more complicated than animals, and we have complicated behaviors, especially with eating,” she said.

“We showed that windows of eating (eating for longer periods of time or less in a day) was not associated with weight change over time among patients from three health systems,” said Dr. Bennett. “The main implication is that restricting your window of eating, such as eating over less time, or having more fasting time, may not reduce weight gain over time, while eating fewer large meals is associated with less weight gain over time.”

The findings were limited by several factors including the exclusion of many younger and less educated individuals, the short follow-up period, and lack of information on weight loss intention at baseline, the researchers noted. Other limitations included the inability to evaluate time-restricted eating or fasting, and the inclusion of individuals currently seeking care, which may limit generalizability.

However, the results were strengthened by the repeated measures of weight, detailed information on obesity risk factors, and real-time assessment of eating behaviors. The results do not support time-restricted eating as a long-term weight-loss strategy, and more studies are needed with a longer follow-up period, the researchers concluded.

However, there may be a role for time restricted eating as a method of total calorie control, Dr. Bennett said.

“Other studies do show that people might be able to use time-restricted eating or intermittent fasting to help them reduce their caloric intake and thus lose weight, so it can still be a helpful weight loss tool for some people who can adhere to it,” she said.

The study was supported by a grant from the American Heart Association to Johns Hopkins University. Dr. Bennett had no financial conflicts to disclose.
 

The number of daily meals, but not the timing between first and last daily meals, was significantly associated with weight changes over a 6-year period, in a prospective study of more than 500 adults.

Some studies suggest that timing food intake – through time-restricted eating or intermittent fasting – can promote weight loss, but these strategies have yielded similar weight loss to eating throughout the day in randomized trials, and population-based studies of meal intervals and weight changes are needed, Di Zhao, PhD, of Johns Hopkins University, Baltimore, and colleagues wrote.

hayatikayha/Getty Images

“Obesity is an epidemic,” corresponding author Wendy Bennett, MD, also of Johns Hopkins University, said in an interview. “We are interested in identifying ways to prevent weight gain over time and reduce obesity risk, since telling people to ‘just eat less’ doesn’t always work.”

In a study published in the Journal of the American Heart Association, the researchers recruited 1,017 adults who were patients at one of three health systems; of these, complete data were available for 547 individuals.

The participants downloaded an app called Daily24 to record the timing of their meals and sleep for at least 1 day. The researchers used electronic medical records to obtain information on weight and comorbidities of the participants for up to 10 years before study enrollment through 10 months after enrollment.

The mean age of the participants was 51.1 years, 78% were women, and 78% were White; the mean body mass index was 30.8 kg/m².

The mean interval from first to last meal was 11.5 hours, and this was not associated with change in weight. The mean times from waking up to the first meal and the time from the last meal to sleeping were 1.6 hours and 4.0 hours, respectively, and these were not associated with weight changes over the follow-up period, the researchers wrote. Sleep duration (mean of 7.5 hours) also was not associated with weight change over time.

However, the total daily number of large and medium-sized meals was associated with weight gain over time, while those who reported more smaller meals showed weight loss. A daily increase of one large, medium, or small meal was associated with an average annual weight change of 0.69 kg, 0.97 kg, and –0.30 kg, respectively.

 

Benefits of time-restricted eating remain unclear

“Animal studies have shown benefits for time restricted feeding, but there are still questions about whether or not it helps prevent weight gain or promotes weight loss in humans,” Dr. Bennett said in an interview.

As for the current study findings, “we were not surprised; humans are more complicated than animals, and we have complicated behaviors, especially with eating,” she said.

“We showed that windows of eating (eating for longer periods of time or less in a day) was not associated with weight change over time among patients from three health systems,” said Dr. Bennett. “The main implication is that restricting your window of eating, such as eating over less time, or having more fasting time, may not reduce weight gain over time, while eating fewer large meals is associated with less weight gain over time.”

The findings were limited by several factors including the exclusion of many younger and less educated individuals, the short follow-up period, and lack of information on weight loss intention at baseline, the researchers noted. Other limitations included the inability to evaluate time-restricted eating or fasting, and the inclusion of individuals currently seeking care, which may limit generalizability.

However, the results were strengthened by the repeated measures of weight, detailed information on obesity risk factors, and real-time assessment of eating behaviors. The results do not support time-restricted eating as a long-term weight-loss strategy, and more studies are needed with a longer follow-up period, the researchers concluded.

However, there may be a role for time restricted eating as a method of total calorie control, Dr. Bennett said.

“Other studies do show that people might be able to use time-restricted eating or intermittent fasting to help them reduce their caloric intake and thus lose weight, so it can still be a helpful weight loss tool for some people who can adhere to it,” she said.

The study was supported by a grant from the American Heart Association to Johns Hopkins University. Dr. Bennett had no financial conflicts to disclose.
 

The number of daily meals, but not the timing between first and last daily meals, was significantly associated with weight changes over a 6-year period, in a prospective study of more than 500 adults.

Some studies suggest that timing food intake – through time-restricted eating or intermittent fasting – can promote weight loss, but these strategies have yielded similar weight loss to eating throughout the day in randomized trials, and population-based studies of meal intervals and weight changes are needed, Di Zhao, PhD, of Johns Hopkins University, Baltimore, and colleagues wrote.

hayatikayha/Getty Images

“Obesity is an epidemic,” corresponding author Wendy Bennett, MD, also of Johns Hopkins University, said in an interview. “We are interested in identifying ways to prevent weight gain over time and reduce obesity risk, since telling people to ‘just eat less’ doesn’t always work.”

In a study published in the Journal of the American Heart Association, the researchers recruited 1,017 adults who were patients at one of three health systems; of these, complete data were available for 547 individuals.

The participants downloaded an app called Daily24 to record the timing of their meals and sleep for at least 1 day. The researchers used electronic medical records to obtain information on weight and comorbidities of the participants for up to 10 years before study enrollment through 10 months after enrollment.

The mean age of the participants was 51.1 years, 78% were women, and 78% were White; the mean body mass index was 30.8 kg/m².

The mean interval from first to last meal was 11.5 hours, and this was not associated with change in weight. The mean times from waking up to the first meal and the time from the last meal to sleeping were 1.6 hours and 4.0 hours, respectively, and these were not associated with weight changes over the follow-up period, the researchers wrote. Sleep duration (mean of 7.5 hours) also was not associated with weight change over time.

However, the total daily number of large and medium-sized meals was associated with weight gain over time, while those who reported more smaller meals showed weight loss. A daily increase of one large, medium, or small meal was associated with an average annual weight change of 0.69 kg, 0.97 kg, and –0.30 kg, respectively.

 

Benefits of time-restricted eating remain unclear

“Animal studies have shown benefits for time restricted feeding, but there are still questions about whether or not it helps prevent weight gain or promotes weight loss in humans,” Dr. Bennett said in an interview.

As for the current study findings, “we were not surprised; humans are more complicated than animals, and we have complicated behaviors, especially with eating,” she said.

“We showed that windows of eating (eating for longer periods of time or less in a day) was not associated with weight change over time among patients from three health systems,” said Dr. Bennett. “The main implication is that restricting your window of eating, such as eating over less time, or having more fasting time, may not reduce weight gain over time, while eating fewer large meals is associated with less weight gain over time.”

The findings were limited by several factors including the exclusion of many younger and less educated individuals, the short follow-up period, and lack of information on weight loss intention at baseline, the researchers noted. Other limitations included the inability to evaluate time-restricted eating or fasting, and the inclusion of individuals currently seeking care, which may limit generalizability.

However, the results were strengthened by the repeated measures of weight, detailed information on obesity risk factors, and real-time assessment of eating behaviors. The results do not support time-restricted eating as a long-term weight-loss strategy, and more studies are needed with a longer follow-up period, the researchers concluded.

However, there may be a role for time restricted eating as a method of total calorie control, Dr. Bennett said.

“Other studies do show that people might be able to use time-restricted eating or intermittent fasting to help them reduce their caloric intake and thus lose weight, so it can still be a helpful weight loss tool for some people who can adhere to it,” she said.

The study was supported by a grant from the American Heart Association to Johns Hopkins University. Dr. Bennett had no financial conflicts to disclose.
 

Eating in response to stress – known as emotional eating – was significantly associated with several markers of long-term cardiovascular damage, based on data from 1,109 individuals.

“We know diet plays a huge role in cardiovascular disease, but we have focused a lot of work on what you eat, not on what makes you eat” – the current study did exactly that, Martha Gulati, MD, who wasn’t involved in the study, said in an interview.

Courtesy Cedars-Sinai

“Emotional eaters consume food to satisfy their brains rather than their stomachs,” study investigator Nicolas Girerd, MD, of the National Institute of Health and Medical Research (INSERM) and a cardiologist at the University Hospital of Nancy (France), wrote in a press release accompanying the study.

Diet plays a role in the development of cardiovascular disease (CVD), but the impact of eating behavior on long-term cardiovascular health remains unclear, wrote Dr. Girerd and colleagues. Previous research has yielded three common psychological dimensions for eating behavior: emotional eating, restrained eating, and external eating.

Both emotional eating and restrained eating have been linked to cardiovascular disease risk, the researchers noted. “Because of previous findings, we hypothesized that [emotional and/or restrained dimensions of eating behavior] are positively associated with cardiovascular damages, as well as with CV risk factors, such as metabolic syndrome,” they wrote.

In a study published in the European Journal of Preventive Cardiology, the researchers reviewed data from 916 adults and 193 adolescents who were participants in the STANISLAS (Suivi Temporaire Annuel Non-Invasif de la Santé des Lorrains Assurés Sociaux), a longitudinal familial cohort in France. Cardiovascular data were collected at four medical visits as part of a full clinical examination between 1993 and 2016, with one visit every 5-10 years. Roughly one-third (31.0%) of the adults were overweight, 7.9% were obese, and 2.7% were underweight. The median age of the adults at the second visit was 44.7 years; the median age of the adolescent group was 15.2 years.

The primary outcome of cardiovascular damage was measured at the fourth visit. Eating behavior was assessed during the second visit using the Dutch Eating Behaviour Questionnaire (DEBQ), and participants were identified as emotional eaters, restrained eaters, or external eaters.

Among the adults, emotional eating was associated with a 38% increased risk of diastolic dysfunction (odds ratio, 1.38; P = .02), over an average follow-up of 13 years, and this association was mediated by stress in 32% of cases. Emotional eating also was positively linked with a higher carotid-femoral pulse-wave velocity (cfPWV-beta), indicative of increased arterial stiffness. However, none of the three dimensions of eating behavior was associated with cardiovascular damage among the adolescents. In addition, none of the eating-behavior dimensions was tied to metabolic syndrome in the adult group (this association was not measured in the adolescents).

Energy intake had no apparent impact on any associations between eating behavior and CVD measures, Dr. Girerd said in the press release. “We might expect that emotional eaters would consume high-calorie foods, which would in turn lead to cardiovascular problems, but this was not the case. One explanation is that we measured average calorie intake and emotional eaters may binge when stressed and then eat less at other times,” and that the resulting “yo-yo” pattern might negatively affect the heart and blood vessels more than stable food intake, he said.

The study findings were limited by several factors, including the observational design that prevented conclusions of causality, the researchers noted. Other limitations included the use of a nonvalidated scale to measure stress, the lack of data on physical activity, and the use of a mainly healthy population in a limited geographic area, which may limit generalizability, they said.

More research is needed in other contexts and larger cohorts, but the results were strengthened by the large study population and the complete data on eating behaviors and detailed health information, they wrote. The results support previous studies and suggest that patients with emotional eating behavior could benefit from emotion regulation skills training, including cognitive, behavioral, psychological, and interpersonal therapies used in other areas, and from pharmacological treatments, the researchers concluded.

The current study offers a unique and important perspective on the relationship between diet and cardiovascular disease, Dr. Gulati, director of preventive cardiology at the Smidt Heart Institute at Cedars-Sinai Medical Center, Los Angeles, told this news organization.

“Examining eating behavior and its relationship with cardiovascular effects in healthy individuals in this prospective way is quite interesting,” said Dr. Gulati, who was not involved in the study.

The researchers examined healthy people at baseline, inquired about their eating habits, and found that emotional eaters “have evidence of cardiovascular changes when compared with the other groups of eaters, after controlling for other risk factors that are associated with cardiovascular disease when following them for 13 years,” said Dr. Gulati, who was recently named Anita Dann Friedman Endowed Chair in Women’s Cardiovascular Medicine and Research at Cedars-Sinai. “This same finding wasn’t seen in adolescents, but this is probably because they are younger, and the effects aren’t seen. That is reassuring, because it means that the more we address eating behaviors, the more likely we are to reduce their effects to the heart,” she noted.

“This study is important because usually, as cardiologists or anyone in medicine, how we assess diet is by assessment of what food people eat; we don’t usually ask about what triggers them to eat,” Dr. Gulati said. “Eating behaviors based on their triggers ultimately affect food choice and food quantity, and help us understand weight changes during a lifetime,” she said.

“I think we don’t have the data to know that an eating behavior would be able to affect cardiac function,” said Dr. Gulati, “but I think we all might hypothesize that emotional eating may be associated with abnormal diastolic function simply through eating high-density food and weight gain.”

The current study did not show a relationship between eating behavior and metabolic syndrome, in contrast with prior studies, Dr. Gulati noted. However, “the authors report that the association between eating behaviors and diastolic dysfunction was mediated through the stress level,” Dr. Gulati said. “It is important to note that this European population was healthy at baseline, and also relatively healthy 13 years later, which makes these findings even more profound.”

Dr. Gulati said that she agrees with the study authors on the need to assess diet and eating behaviors when assessing cardiovascular risk in patient. “Diet assessment as part of prevention is central, but we should ask not only ‘what do you eat,’ but also ‘what makes you eat,’ ” she said.

More research is needed in other populations, Dr. Gulati added. The current study population was healthy at baseline and follow-up. Studies are needed in cohorts in the United States and in the developing world to see how the results might differ; as well as in rural America or in “food deserts” where food choices are limited.

Another research topic is the interplay between eating behaviors and social determinants of health, in terms of their effect on cardiovascular function, Dr. Gulati said, “and it will be valuable to follow this cohort further to see how these eating behaviors and these intermediate measures translate into cardiovascular outcomes.” Future studies should also examine whether the changes in cardiac function are reversible by interventions to modify eating behavior, particularly emotional eating, she said.

Supporters of the study included the Regional University Hospital Center of Nancy, the French Ministry of Solidarity and Health, and a public grant overseen by the French National Research Agency. The researchers had no financial conflicts to disclose.

Dr. Gulati, who serves on the editorial advisory board of MDedge Cardiology, had no financial conflicts to disclose.
 

Eating in response to stress – known as emotional eating – was significantly associated with several markers of long-term cardiovascular damage, based on data from 1,109 individuals.

“We know diet plays a huge role in cardiovascular disease, but we have focused a lot of work on what you eat, not on what makes you eat” – the current study did exactly that, Martha Gulati, MD, who wasn’t involved in the study, said in an interview.

Courtesy Cedars-Sinai

“Emotional eaters consume food to satisfy their brains rather than their stomachs,” study investigator Nicolas Girerd, MD, of the National Institute of Health and Medical Research (INSERM) and a cardiologist at the University Hospital of Nancy (France), wrote in a press release accompanying the study.

Diet plays a role in the development of cardiovascular disease (CVD), but the impact of eating behavior on long-term cardiovascular health remains unclear, wrote Dr. Girerd and colleagues. Previous research has yielded three common psychological dimensions for eating behavior: emotional eating, restrained eating, and external eating.

Both emotional eating and restrained eating have been linked to cardiovascular disease risk, the researchers noted. “Because of previous findings, we hypothesized that [emotional and/or restrained dimensions of eating behavior] are positively associated with cardiovascular damages, as well as with CV risk factors, such as metabolic syndrome,” they wrote.

In a study published in the European Journal of Preventive Cardiology, the researchers reviewed data from 916 adults and 193 adolescents who were participants in the STANISLAS (Suivi Temporaire Annuel Non-Invasif de la Santé des Lorrains Assurés Sociaux), a longitudinal familial cohort in France. Cardiovascular data were collected at four medical visits as part of a full clinical examination between 1993 and 2016, with one visit every 5-10 years. Roughly one-third (31.0%) of the adults were overweight, 7.9% were obese, and 2.7% were underweight. The median age of the adults at the second visit was 44.7 years; the median age of the adolescent group was 15.2 years.

The primary outcome of cardiovascular damage was measured at the fourth visit. Eating behavior was assessed during the second visit using the Dutch Eating Behaviour Questionnaire (DEBQ), and participants were identified as emotional eaters, restrained eaters, or external eaters.

Among the adults, emotional eating was associated with a 38% increased risk of diastolic dysfunction (odds ratio, 1.38; P = .02), over an average follow-up of 13 years, and this association was mediated by stress in 32% of cases. Emotional eating also was positively linked with a higher carotid-femoral pulse-wave velocity (cfPWV-beta), indicative of increased arterial stiffness. However, none of the three dimensions of eating behavior was associated with cardiovascular damage among the adolescents. In addition, none of the eating-behavior dimensions was tied to metabolic syndrome in the adult group (this association was not measured in the adolescents).

Energy intake had no apparent impact on any associations between eating behavior and CVD measures, Dr. Girerd said in the press release. “We might expect that emotional eaters would consume high-calorie foods, which would in turn lead to cardiovascular problems, but this was not the case. One explanation is that we measured average calorie intake and emotional eaters may binge when stressed and then eat less at other times,” and that the resulting “yo-yo” pattern might negatively affect the heart and blood vessels more than stable food intake, he said.

The study findings were limited by several factors, including the observational design that prevented conclusions of causality, the researchers noted. Other limitations included the use of a nonvalidated scale to measure stress, the lack of data on physical activity, and the use of a mainly healthy population in a limited geographic area, which may limit generalizability, they said.

More research is needed in other contexts and larger cohorts, but the results were strengthened by the large study population and the complete data on eating behaviors and detailed health information, they wrote. The results support previous studies and suggest that patients with emotional eating behavior could benefit from emotion regulation skills training, including cognitive, behavioral, psychological, and interpersonal therapies used in other areas, and from pharmacological treatments, the researchers concluded.

The current study offers a unique and important perspective on the relationship between diet and cardiovascular disease, Dr. Gulati, director of preventive cardiology at the Smidt Heart Institute at Cedars-Sinai Medical Center, Los Angeles, told this news organization.

“Examining eating behavior and its relationship with cardiovascular effects in healthy individuals in this prospective way is quite interesting,” said Dr. Gulati, who was not involved in the study.

The researchers examined healthy people at baseline, inquired about their eating habits, and found that emotional eaters “have evidence of cardiovascular changes when compared with the other groups of eaters, after controlling for other risk factors that are associated with cardiovascular disease when following them for 13 years,” said Dr. Gulati, who was recently named Anita Dann Friedman Endowed Chair in Women’s Cardiovascular Medicine and Research at Cedars-Sinai. “This same finding wasn’t seen in adolescents, but this is probably because they are younger, and the effects aren’t seen. That is reassuring, because it means that the more we address eating behaviors, the more likely we are to reduce their effects to the heart,” she noted.

“This study is important because usually, as cardiologists or anyone in medicine, how we assess diet is by assessment of what food people eat; we don’t usually ask about what triggers them to eat,” Dr. Gulati said. “Eating behaviors based on their triggers ultimately affect food choice and food quantity, and help us understand weight changes during a lifetime,” she said.

“I think we don’t have the data to know that an eating behavior would be able to affect cardiac function,” said Dr. Gulati, “but I think we all might hypothesize that emotional eating may be associated with abnormal diastolic function simply through eating high-density food and weight gain.”

The current study did not show a relationship between eating behavior and metabolic syndrome, in contrast with prior studies, Dr. Gulati noted. However, “the authors report that the association between eating behaviors and diastolic dysfunction was mediated through the stress level,” Dr. Gulati said. “It is important to note that this European population was healthy at baseline, and also relatively healthy 13 years later, which makes these findings even more profound.”

Dr. Gulati said that she agrees with the study authors on the need to assess diet and eating behaviors when assessing cardiovascular risk in patient. “Diet assessment as part of prevention is central, but we should ask not only ‘what do you eat,’ but also ‘what makes you eat,’ ” she said.

More research is needed in other populations, Dr. Gulati added. The current study population was healthy at baseline and follow-up. Studies are needed in cohorts in the United States and in the developing world to see how the results might differ; as well as in rural America or in “food deserts” where food choices are limited.

Another research topic is the interplay between eating behaviors and social determinants of health, in terms of their effect on cardiovascular function, Dr. Gulati said, “and it will be valuable to follow this cohort further to see how these eating behaviors and these intermediate measures translate into cardiovascular outcomes.” Future studies should also examine whether the changes in cardiac function are reversible by interventions to modify eating behavior, particularly emotional eating, she said.

Supporters of the study included the Regional University Hospital Center of Nancy, the French Ministry of Solidarity and Health, and a public grant overseen by the French National Research Agency. The researchers had no financial conflicts to disclose.

Dr. Gulati, who serves on the editorial advisory board of MDedge Cardiology, had no financial conflicts to disclose.
 

Eating in response to stress – known as emotional eating – was significantly associated with several markers of long-term cardiovascular damage, based on data from 1,109 individuals.

“We know diet plays a huge role in cardiovascular disease, but we have focused a lot of work on what you eat, not on what makes you eat” – the current study did exactly that, Martha Gulati, MD, who wasn’t involved in the study, said in an interview.

Courtesy Cedars-Sinai

“Emotional eaters consume food to satisfy their brains rather than their stomachs,” study investigator Nicolas Girerd, MD, of the National Institute of Health and Medical Research (INSERM) and a cardiologist at the University Hospital of Nancy (France), wrote in a press release accompanying the study.

Diet plays a role in the development of cardiovascular disease (CVD), but the impact of eating behavior on long-term cardiovascular health remains unclear, wrote Dr. Girerd and colleagues. Previous research has yielded three common psychological dimensions for eating behavior: emotional eating, restrained eating, and external eating.

Both emotional eating and restrained eating have been linked to cardiovascular disease risk, the researchers noted. “Because of previous findings, we hypothesized that [emotional and/or restrained dimensions of eating behavior] are positively associated with cardiovascular damages, as well as with CV risk factors, such as metabolic syndrome,” they wrote.

In a study published in the European Journal of Preventive Cardiology, the researchers reviewed data from 916 adults and 193 adolescents who were participants in the STANISLAS (Suivi Temporaire Annuel Non-Invasif de la Santé des Lorrains Assurés Sociaux), a longitudinal familial cohort in France. Cardiovascular data were collected at four medical visits as part of a full clinical examination between 1993 and 2016, with one visit every 5-10 years. Roughly one-third (31.0%) of the adults were overweight, 7.9% were obese, and 2.7% were underweight. The median age of the adults at the second visit was 44.7 years; the median age of the adolescent group was 15.2 years.

The primary outcome of cardiovascular damage was measured at the fourth visit. Eating behavior was assessed during the second visit using the Dutch Eating Behaviour Questionnaire (DEBQ), and participants were identified as emotional eaters, restrained eaters, or external eaters.

Among the adults, emotional eating was associated with a 38% increased risk of diastolic dysfunction (odds ratio, 1.38; P = .02), over an average follow-up of 13 years, and this association was mediated by stress in 32% of cases. Emotional eating also was positively linked with a higher carotid-femoral pulse-wave velocity (cfPWV-beta), indicative of increased arterial stiffness. However, none of the three dimensions of eating behavior was associated with cardiovascular damage among the adolescents. In addition, none of the eating-behavior dimensions was tied to metabolic syndrome in the adult group (this association was not measured in the adolescents).

Energy intake had no apparent impact on any associations between eating behavior and CVD measures, Dr. Girerd said in the press release. “We might expect that emotional eaters would consume high-calorie foods, which would in turn lead to cardiovascular problems, but this was not the case. One explanation is that we measured average calorie intake and emotional eaters may binge when stressed and then eat less at other times,” and that the resulting “yo-yo” pattern might negatively affect the heart and blood vessels more than stable food intake, he said.

The study findings were limited by several factors, including the observational design that prevented conclusions of causality, the researchers noted. Other limitations included the use of a nonvalidated scale to measure stress, the lack of data on physical activity, and the use of a mainly healthy population in a limited geographic area, which may limit generalizability, they said.

More research is needed in other contexts and larger cohorts, but the results were strengthened by the large study population and the complete data on eating behaviors and detailed health information, they wrote. The results support previous studies and suggest that patients with emotional eating behavior could benefit from emotion regulation skills training, including cognitive, behavioral, psychological, and interpersonal therapies used in other areas, and from pharmacological treatments, the researchers concluded.

The current study offers a unique and important perspective on the relationship between diet and cardiovascular disease, Dr. Gulati, director of preventive cardiology at the Smidt Heart Institute at Cedars-Sinai Medical Center, Los Angeles, told this news organization.

“Examining eating behavior and its relationship with cardiovascular effects in healthy individuals in this prospective way is quite interesting,” said Dr. Gulati, who was not involved in the study.

The researchers examined healthy people at baseline, inquired about their eating habits, and found that emotional eaters “have evidence of cardiovascular changes when compared with the other groups of eaters, after controlling for other risk factors that are associated with cardiovascular disease when following them for 13 years,” said Dr. Gulati, who was recently named Anita Dann Friedman Endowed Chair in Women’s Cardiovascular Medicine and Research at Cedars-Sinai. “This same finding wasn’t seen in adolescents, but this is probably because they are younger, and the effects aren’t seen. That is reassuring, because it means that the more we address eating behaviors, the more likely we are to reduce their effects to the heart,” she noted.

“This study is important because usually, as cardiologists or anyone in medicine, how we assess diet is by assessment of what food people eat; we don’t usually ask about what triggers them to eat,” Dr. Gulati said. “Eating behaviors based on their triggers ultimately affect food choice and food quantity, and help us understand weight changes during a lifetime,” she said.

“I think we don’t have the data to know that an eating behavior would be able to affect cardiac function,” said Dr. Gulati, “but I think we all might hypothesize that emotional eating may be associated with abnormal diastolic function simply through eating high-density food and weight gain.”

The current study did not show a relationship between eating behavior and metabolic syndrome, in contrast with prior studies, Dr. Gulati noted. However, “the authors report that the association between eating behaviors and diastolic dysfunction was mediated through the stress level,” Dr. Gulati said. “It is important to note that this European population was healthy at baseline, and also relatively healthy 13 years later, which makes these findings even more profound.”

Dr. Gulati said that she agrees with the study authors on the need to assess diet and eating behaviors when assessing cardiovascular risk in patient. “Diet assessment as part of prevention is central, but we should ask not only ‘what do you eat,’ but also ‘what makes you eat,’ ” she said.

More research is needed in other populations, Dr. Gulati added. The current study population was healthy at baseline and follow-up. Studies are needed in cohorts in the United States and in the developing world to see how the results might differ; as well as in rural America or in “food deserts” where food choices are limited.

Another research topic is the interplay between eating behaviors and social determinants of health, in terms of their effect on cardiovascular function, Dr. Gulati said, “and it will be valuable to follow this cohort further to see how these eating behaviors and these intermediate measures translate into cardiovascular outcomes.” Future studies should also examine whether the changes in cardiac function are reversible by interventions to modify eating behavior, particularly emotional eating, she said.

Supporters of the study included the Regional University Hospital Center of Nancy, the French Ministry of Solidarity and Health, and a public grant overseen by the French National Research Agency. The researchers had no financial conflicts to disclose.

Dr. Gulati, who serves on the editorial advisory board of MDedge Cardiology, had no financial conflicts to disclose.
 

A new study that quantifies the harm to the liver of eating fast food might motivate people to eat less of it – especially those with obesity or diabetes.

The study finds that getting one-fifth or more of total daily calories from fast food can increase the risk of nonalcoholic fatty liver disease, which can lead to cirrhosis and its complications, including liver failure and liver cancer.

Annbozhko/iStock/Getty Images

Although the magnitude of association was modest among the general population, “striking” elevations in steatosis were evident among persons with obesity and diabetes who consumed fast food, in comparison with their counterparts who did not have obesity and diabetes, the researchers reported.

“My hope is that this study encourages people to seek out more nutritious, healthy food options and provides information that clinicians can use to counsel their patients, particularly those with underlying metabolic risk factors, of the importance of avoiding foods that are high in fat, carbohydrates, and processed sugars,” lead investigator Ani Kardashian, MD, hepatologist with the University of Southern California, Los Angeles, said in an interview.

“At a policy level, public health efforts are needed to improve access to affordable, healthy, and nutritious food options across the U.S. This is especially important as more people have turned to fast foods during the pandemic and as the price of food as risen dramatically over the past year due to food inflation,” Dr. Kardashian added.

The study was published online in Clinical Gastroenterology and Hepatology.
 

More fast food, greater steatosis

The findings are based on data from 3,954 adults who participated in the National Health and Nutrition Examination Survey (NHANES) of 2017-2018 and who underwent vibration-controlled transient elastography. Of these participants, data regarding 1- or 2-day dietary recall were available.

Steatosis, the primary outcome, was measured via controlled attenuation parameter (CAP). Two validated cutoffs were utilized (CAP ≥ 263 dB/m and CAP ≥ 285 dB/m).

Of those surveyed, 52% consumed any fast food, and 29% derived 20% or more of their daily calories from fast food.

Fast-food intake of 20% or more of daily calories was significantly associated with greater steatosis after multivariable adjustment, both as a continuous measure (4.6 dB/m higher CAP score) and with respect to the CAP ≥ 263 dB/m cutoff (odds ratio [OR], 1.45).

“The negative effects are particularly severe in people who already have diabetes and obesity,” Dr. Kardashian told this news organization.

For example, with diabetes and fast-food intake of 20% or more of daily calories, the ORs of meeting the CAP ≥ 263 dB/m cutoff and the CAP ≥ 285 dB/m cutoff were 2.3 and 2.48, respectively.

The researchers said their findings are particularly “alarming,” given the overall increase in fast-food consumption over the past 50 years in the United States, regardless of socioeconomic status.
 

Diet coaching

The finding that fast food has more deleterious impact on those with obesity and diabetes “emphasizes that it is not just one insult but multiple factors that contribute to overall health,” said Nancy Reau, MD, section chief of hepatology at Rush University Medical Center in Chicago.

“This is actually great news, because diet is modifiable, vs. your genetics, which you currently can’t change. This doesn’t mean if you’re lean you can eat whatever you want, but if you are overweight, being careful with your diet does have impact, even if it doesn’t lead to substantial weight changes,” said Dr. Reau, who is not affiliated with the study.

For people who have limited options and need to eat fast food, “there are healthy choices at most restaurants; you just need to be smart about reading labels, watching calories, and ordering the healthier options,” Dr. Reau said in an interview.

Fast food and fatty liver go “hand in hand,” Lisa Ganjhu, DO, gastroenterologist and hepatologist at NYU Langone Health in New York, told this news organization.

“I counsel and coach my patients on healthy diet and exercise, and I’ve been pretty successful,” said Dr. Ganjhu, who was not involved with the study.

“If my patient is eating at McDonald’s a lot, I basically walk through the menu with them and help them find something healthy. When patients see the benefits of cutting out fat and reducing carbohydrates, they are more apt to continue,” Dr. Ganjhu said.

The study was funded by the University of Southern California. Dr. Kardashian, Dr. Reau, and Dr. Ganjhu have disclosed no relevant financial relationships.

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

A new study that quantifies the harm to the liver of eating fast food might motivate people to eat less of it – especially those with obesity or diabetes.

The study finds that getting one-fifth or more of total daily calories from fast food can increase the risk of nonalcoholic fatty liver disease, which can lead to cirrhosis and its complications, including liver failure and liver cancer.

Annbozhko/iStock/Getty Images

Although the magnitude of association was modest among the general population, “striking” elevations in steatosis were evident among persons with obesity and diabetes who consumed fast food, in comparison with their counterparts who did not have obesity and diabetes, the researchers reported.

“My hope is that this study encourages people to seek out more nutritious, healthy food options and provides information that clinicians can use to counsel their patients, particularly those with underlying metabolic risk factors, of the importance of avoiding foods that are high in fat, carbohydrates, and processed sugars,” lead investigator Ani Kardashian, MD, hepatologist with the University of Southern California, Los Angeles, said in an interview.

“At a policy level, public health efforts are needed to improve access to affordable, healthy, and nutritious food options across the U.S. This is especially important as more people have turned to fast foods during the pandemic and as the price of food as risen dramatically over the past year due to food inflation,” Dr. Kardashian added.

The study was published online in Clinical Gastroenterology and Hepatology.
 

More fast food, greater steatosis

The findings are based on data from 3,954 adults who participated in the National Health and Nutrition Examination Survey (NHANES) of 2017-2018 and who underwent vibration-controlled transient elastography. Of these participants, data regarding 1- or 2-day dietary recall were available.

Steatosis, the primary outcome, was measured via controlled attenuation parameter (CAP). Two validated cutoffs were utilized (CAP ≥ 263 dB/m and CAP ≥ 285 dB/m).

Of those surveyed, 52% consumed any fast food, and 29% derived 20% or more of their daily calories from fast food.

Fast-food intake of 20% or more of daily calories was significantly associated with greater steatosis after multivariable adjustment, both as a continuous measure (4.6 dB/m higher CAP score) and with respect to the CAP ≥ 263 dB/m cutoff (odds ratio [OR], 1.45).

“The negative effects are particularly severe in people who already have diabetes and obesity,” Dr. Kardashian told this news organization.

For example, with diabetes and fast-food intake of 20% or more of daily calories, the ORs of meeting the CAP ≥ 263 dB/m cutoff and the CAP ≥ 285 dB/m cutoff were 2.3 and 2.48, respectively.

The researchers said their findings are particularly “alarming,” given the overall increase in fast-food consumption over the past 50 years in the United States, regardless of socioeconomic status.
 

Diet coaching

The finding that fast food has more deleterious impact on those with obesity and diabetes “emphasizes that it is not just one insult but multiple factors that contribute to overall health,” said Nancy Reau, MD, section chief of hepatology at Rush University Medical Center in Chicago.

“This is actually great news, because diet is modifiable, vs. your genetics, which you currently can’t change. This doesn’t mean if you’re lean you can eat whatever you want, but if you are overweight, being careful with your diet does have impact, even if it doesn’t lead to substantial weight changes,” said Dr. Reau, who is not affiliated with the study.

For people who have limited options and need to eat fast food, “there are healthy choices at most restaurants; you just need to be smart about reading labels, watching calories, and ordering the healthier options,” Dr. Reau said in an interview.

Fast food and fatty liver go “hand in hand,” Lisa Ganjhu, DO, gastroenterologist and hepatologist at NYU Langone Health in New York, told this news organization.

“I counsel and coach my patients on healthy diet and exercise, and I’ve been pretty successful,” said Dr. Ganjhu, who was not involved with the study.

“If my patient is eating at McDonald’s a lot, I basically walk through the menu with them and help them find something healthy. When patients see the benefits of cutting out fat and reducing carbohydrates, they are more apt to continue,” Dr. Ganjhu said.

The study was funded by the University of Southern California. Dr. Kardashian, Dr. Reau, and Dr. Ganjhu have disclosed no relevant financial relationships.

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

A new study that quantifies the harm to the liver of eating fast food might motivate people to eat less of it – especially those with obesity or diabetes.

The study finds that getting one-fifth or more of total daily calories from fast food can increase the risk of nonalcoholic fatty liver disease, which can lead to cirrhosis and its complications, including liver failure and liver cancer.

Annbozhko/iStock/Getty Images

Although the magnitude of association was modest among the general population, “striking” elevations in steatosis were evident among persons with obesity and diabetes who consumed fast food, in comparison with their counterparts who did not have obesity and diabetes, the researchers reported.

“My hope is that this study encourages people to seek out more nutritious, healthy food options and provides information that clinicians can use to counsel their patients, particularly those with underlying metabolic risk factors, of the importance of avoiding foods that are high in fat, carbohydrates, and processed sugars,” lead investigator Ani Kardashian, MD, hepatologist with the University of Southern California, Los Angeles, said in an interview.

“At a policy level, public health efforts are needed to improve access to affordable, healthy, and nutritious food options across the U.S. This is especially important as more people have turned to fast foods during the pandemic and as the price of food as risen dramatically over the past year due to food inflation,” Dr. Kardashian added.

The study was published online in Clinical Gastroenterology and Hepatology.
 

More fast food, greater steatosis

The findings are based on data from 3,954 adults who participated in the National Health and Nutrition Examination Survey (NHANES) of 2017-2018 and who underwent vibration-controlled transient elastography. Of these participants, data regarding 1- or 2-day dietary recall were available.

Steatosis, the primary outcome, was measured via controlled attenuation parameter (CAP). Two validated cutoffs were utilized (CAP ≥ 263 dB/m and CAP ≥ 285 dB/m).

Of those surveyed, 52% consumed any fast food, and 29% derived 20% or more of their daily calories from fast food.

Fast-food intake of 20% or more of daily calories was significantly associated with greater steatosis after multivariable adjustment, both as a continuous measure (4.6 dB/m higher CAP score) and with respect to the CAP ≥ 263 dB/m cutoff (odds ratio [OR], 1.45).

“The negative effects are particularly severe in people who already have diabetes and obesity,” Dr. Kardashian told this news organization.

For example, with diabetes and fast-food intake of 20% or more of daily calories, the ORs of meeting the CAP ≥ 263 dB/m cutoff and the CAP ≥ 285 dB/m cutoff were 2.3 and 2.48, respectively.

The researchers said their findings are particularly “alarming,” given the overall increase in fast-food consumption over the past 50 years in the United States, regardless of socioeconomic status.
 

Diet coaching

The finding that fast food has more deleterious impact on those with obesity and diabetes “emphasizes that it is not just one insult but multiple factors that contribute to overall health,” said Nancy Reau, MD, section chief of hepatology at Rush University Medical Center in Chicago.

“This is actually great news, because diet is modifiable, vs. your genetics, which you currently can’t change. This doesn’t mean if you’re lean you can eat whatever you want, but if you are overweight, being careful with your diet does have impact, even if it doesn’t lead to substantial weight changes,” said Dr. Reau, who is not affiliated with the study.

For people who have limited options and need to eat fast food, “there are healthy choices at most restaurants; you just need to be smart about reading labels, watching calories, and ordering the healthier options,” Dr. Reau said in an interview.

Fast food and fatty liver go “hand in hand,” Lisa Ganjhu, DO, gastroenterologist and hepatologist at NYU Langone Health in New York, told this news organization.

“I counsel and coach my patients on healthy diet and exercise, and I’ve been pretty successful,” said Dr. Ganjhu, who was not involved with the study.

“If my patient is eating at McDonald’s a lot, I basically walk through the menu with them and help them find something healthy. When patients see the benefits of cutting out fat and reducing carbohydrates, they are more apt to continue,” Dr. Ganjhu said.

The study was funded by the University of Southern California. Dr. Kardashian, Dr. Reau, and Dr. Ganjhu have disclosed no relevant financial relationships.

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

People who are overweight or have obesity appear to show a blunted response to vitamin D supplementation compared with normal-weight individuals in a new analysis of a randomized trial.

“There seems to be something different happening with vitamin D metabolism at higher body weights, and this study may help explain diminished outcomes of supplementation for individuals with an elevated body mass index (BMI),” said first author Deirdre K. Tobias, ScD, an associate epidemiologist at Brigham and Women’s Hospital’s division of preventive medicine in Boston. She made the comments in a press statement issued with the study, published online in JAMA Network Open.

The findings are from a post hoc analysis of the large-scale Vitamin D and Omega-3 Trial (VITAL), which overall, showed no benefits among those randomized to 5 years of vitamin D supplementation (2,000 IU/day) versus placebo in terms of the primary endpoints of cancer or major cardiovascular disease outcomes.

However, prespecified secondary analyses according to body weight showed that those of normal weight (body mass index < 25.0 kg/m²) did have significant benefits from supplementation versus placebo in terms of cancer incidence (24% lower), cancer mortality (42% lower), and autoimmune disease (22% lower), while no corresponding benefits were observed among those who were overweight or had obesity.

The new analysis adds important context to the trial’s overall findings, noted Katherine N. Bachmann, MD, in an accompanying editorial.

“Thanks to its very large sample size and detailed biomarker analyses, the current study is able to provide novel evidence that responses to vitamin D supplementation may be attenuated in individuals with overweight and obesity, and that this may contribute to the differential outcomes by BMI noted in the original VITAL,” she wrote.

“Further studies are warranted to determine the optimal dose or circulating vitamin D level for individuals with obesity for nonskeletal health-related outcomes,” added Dr. Bachmann, division of diabetes, endocrinology, and metabolism at Vanderbilt University Medical Center, Nashville, Tenn.
 

New analysis examined vitamin D and biomarkers at baseline and 2 years

To take a closer look at the specific changes in vitamin D serum and biomarker levels between the different body-weight groups, Dr. Tobias and colleagues evaluated data from 16,515 participants in the trial (of the 25,000 originally included in VITAL) and looked at changes in key vitamin D serum levels and biomarkers at baseline and follow-up.

Consistent with common observations of lower vitamin D levels with obesity, participants in the higher BMI categories had incrementally lower mean levels of serum total 25-hydroxyvitamin D (25-OHD) prior to randomization, with levels ranging from 32.3 ng/mL for normal weight individuals to 28.0 ng/mL for those with obesity class II (P < .001 for a linear trend).

Baseline levels of other vitamin D biomarkers were also lower with higher BMI, including total 25-OHD 3, free vitamin D (FVD), and bioavailable vitamin D (BioD).

Among 2,742 participants with repeated blood collections at year 2, significant mean increases were observed overall at the end of the study period in serum 25-OHD levels (11.9 ng/mL) among those randomized to vitamin D supplementation, compared with little change in the placebo group (–0.7 ng/mL).

There were also significant increases, overall, in mean total 25-OHD, 25-OHD3, FVD, and BioD levels at 2 years among those receiving supplementation, with little or no change in the placebo group.

When stratified by BMI level, however, the magnitude of increase was lower among those with higher baseline BMI (all treatment effect interactions P < .001). For instance, the mean increases in total 25-OHD level at 2 years for supplementation versus placebo were 13.5 ng/mL for those with a BMI less than 25.0 versus only 10.0 ng/mL for those with a BMI of at least 35.0.

Importantly, even after controlling for baseline vitamin D status of sufficiency or insufficiency, BMI was still significantly associated with changes seen with supplementation.

“It was surprising that, even in the context of low vitamin D levels, those with higher BMI still had a blunted response to supplementation, suggesting the interaction between supplementation and BMI with health outcomes is not simply due to higher prevalence of deficiency,” Dr. Tobias said in an interview. “It really does seem that, even with insufficient or low levels at baseline, those with higher BMI are not able to catch up to sufficient levels as well as those with normal BMI.”
 

Mechanisms?

Among leading theories as to why higher BMI would be associated with lower serum vitamin D levels and a lower response to supplementation is that because vitamin D is a fat-soluble vitamin, the increased adiposity and fat storage capacity with higher BMI results in greater removal of the vitamin from circulation.

“Our results are largely consistent with this hypothesis,” the authors noted.

They added that weight-loss studies, including those involving bariatric surgery, have further shown greater increases in serum 25-OHD or circulating vitamin D levels after weight loss compared with baseline.

Other theories suggest that obesity-induced hepatic dysfunction can contribute to impaired vitamin D metabolism.

Without a clear understanding of the exact mechanisms, the potential for addressing the lower vitamin D levels with, for instance, higher doses of supplementation among those with obesity, also remains unclear, Dr. Tobias noted.

“I think once there’s more clarity on what the mechanism is, then it would make sense to consider what doses could be necessary to achieve the internal levels desired,” she said.

The VITAL study received funding from a grant from the National Center for Complementary and Integrative Health and other sources.

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

People who are overweight or have obesity appear to show a blunted response to vitamin D supplementation compared with normal-weight individuals in a new analysis of a randomized trial.

“There seems to be something different happening with vitamin D metabolism at higher body weights, and this study may help explain diminished outcomes of supplementation for individuals with an elevated body mass index (BMI),” said first author Deirdre K. Tobias, ScD, an associate epidemiologist at Brigham and Women’s Hospital’s division of preventive medicine in Boston. She made the comments in a press statement issued with the study, published online in JAMA Network Open.

The findings are from a post hoc analysis of the large-scale Vitamin D and Omega-3 Trial (VITAL), which overall, showed no benefits among those randomized to 5 years of vitamin D supplementation (2,000 IU/day) versus placebo in terms of the primary endpoints of cancer or major cardiovascular disease outcomes.

However, prespecified secondary analyses according to body weight showed that those of normal weight (body mass index < 25.0 kg/m²) did have significant benefits from supplementation versus placebo in terms of cancer incidence (24% lower), cancer mortality (42% lower), and autoimmune disease (22% lower), while no corresponding benefits were observed among those who were overweight or had obesity.

The new analysis adds important context to the trial’s overall findings, noted Katherine N. Bachmann, MD, in an accompanying editorial.

“Thanks to its very large sample size and detailed biomarker analyses, the current study is able to provide novel evidence that responses to vitamin D supplementation may be attenuated in individuals with overweight and obesity, and that this may contribute to the differential outcomes by BMI noted in the original VITAL,” she wrote.

“Further studies are warranted to determine the optimal dose or circulating vitamin D level for individuals with obesity for nonskeletal health-related outcomes,” added Dr. Bachmann, division of diabetes, endocrinology, and metabolism at Vanderbilt University Medical Center, Nashville, Tenn.
 

New analysis examined vitamin D and biomarkers at baseline and 2 years

To take a closer look at the specific changes in vitamin D serum and biomarker levels between the different body-weight groups, Dr. Tobias and colleagues evaluated data from 16,515 participants in the trial (of the 25,000 originally included in VITAL) and looked at changes in key vitamin D serum levels and biomarkers at baseline and follow-up.

Consistent with common observations of lower vitamin D levels with obesity, participants in the higher BMI categories had incrementally lower mean levels of serum total 25-hydroxyvitamin D (25-OHD) prior to randomization, with levels ranging from 32.3 ng/mL for normal weight individuals to 28.0 ng/mL for those with obesity class II (P < .001 for a linear trend).

Baseline levels of other vitamin D biomarkers were also lower with higher BMI, including total 25-OHD 3, free vitamin D (FVD), and bioavailable vitamin D (BioD).

Among 2,742 participants with repeated blood collections at year 2, significant mean increases were observed overall at the end of the study period in serum 25-OHD levels (11.9 ng/mL) among those randomized to vitamin D supplementation, compared with little change in the placebo group (–0.7 ng/mL).

There were also significant increases, overall, in mean total 25-OHD, 25-OHD3, FVD, and BioD levels at 2 years among those receiving supplementation, with little or no change in the placebo group.

When stratified by BMI level, however, the magnitude of increase was lower among those with higher baseline BMI (all treatment effect interactions P < .001). For instance, the mean increases in total 25-OHD level at 2 years for supplementation versus placebo were 13.5 ng/mL for those with a BMI less than 25.0 versus only 10.0 ng/mL for those with a BMI of at least 35.0.

Importantly, even after controlling for baseline vitamin D status of sufficiency or insufficiency, BMI was still significantly associated with changes seen with supplementation.

“It was surprising that, even in the context of low vitamin D levels, those with higher BMI still had a blunted response to supplementation, suggesting the interaction between supplementation and BMI with health outcomes is not simply due to higher prevalence of deficiency,” Dr. Tobias said in an interview. “It really does seem that, even with insufficient or low levels at baseline, those with higher BMI are not able to catch up to sufficient levels as well as those with normal BMI.”
 

Mechanisms?

Among leading theories as to why higher BMI would be associated with lower serum vitamin D levels and a lower response to supplementation is that because vitamin D is a fat-soluble vitamin, the increased adiposity and fat storage capacity with higher BMI results in greater removal of the vitamin from circulation.

“Our results are largely consistent with this hypothesis,” the authors noted.

They added that weight-loss studies, including those involving bariatric surgery, have further shown greater increases in serum 25-OHD or circulating vitamin D levels after weight loss compared with baseline.

Other theories suggest that obesity-induced hepatic dysfunction can contribute to impaired vitamin D metabolism.

Without a clear understanding of the exact mechanisms, the potential for addressing the lower vitamin D levels with, for instance, higher doses of supplementation among those with obesity, also remains unclear, Dr. Tobias noted.

“I think once there’s more clarity on what the mechanism is, then it would make sense to consider what doses could be necessary to achieve the internal levels desired,” she said.

The VITAL study received funding from a grant from the National Center for Complementary and Integrative Health and other sources.

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

People who are overweight or have obesity appear to show a blunted response to vitamin D supplementation compared with normal-weight individuals in a new analysis of a randomized trial.

“There seems to be something different happening with vitamin D metabolism at higher body weights, and this study may help explain diminished outcomes of supplementation for individuals with an elevated body mass index (BMI),” said first author Deirdre K. Tobias, ScD, an associate epidemiologist at Brigham and Women’s Hospital’s division of preventive medicine in Boston. She made the comments in a press statement issued with the study, published online in JAMA Network Open.

The findings are from a post hoc analysis of the large-scale Vitamin D and Omega-3 Trial (VITAL), which overall, showed no benefits among those randomized to 5 years of vitamin D supplementation (2,000 IU/day) versus placebo in terms of the primary endpoints of cancer or major cardiovascular disease outcomes.

However, prespecified secondary analyses according to body weight showed that those of normal weight (body mass index < 25.0 kg/m²) did have significant benefits from supplementation versus placebo in terms of cancer incidence (24% lower), cancer mortality (42% lower), and autoimmune disease (22% lower), while no corresponding benefits were observed among those who were overweight or had obesity.

The new analysis adds important context to the trial’s overall findings, noted Katherine N. Bachmann, MD, in an accompanying editorial.

“Thanks to its very large sample size and detailed biomarker analyses, the current study is able to provide novel evidence that responses to vitamin D supplementation may be attenuated in individuals with overweight and obesity, and that this may contribute to the differential outcomes by BMI noted in the original VITAL,” she wrote.

“Further studies are warranted to determine the optimal dose or circulating vitamin D level for individuals with obesity for nonskeletal health-related outcomes,” added Dr. Bachmann, division of diabetes, endocrinology, and metabolism at Vanderbilt University Medical Center, Nashville, Tenn.
 

New analysis examined vitamin D and biomarkers at baseline and 2 years

To take a closer look at the specific changes in vitamin D serum and biomarker levels between the different body-weight groups, Dr. Tobias and colleagues evaluated data from 16,515 participants in the trial (of the 25,000 originally included in VITAL) and looked at changes in key vitamin D serum levels and biomarkers at baseline and follow-up.

Consistent with common observations of lower vitamin D levels with obesity, participants in the higher BMI categories had incrementally lower mean levels of serum total 25-hydroxyvitamin D (25-OHD) prior to randomization, with levels ranging from 32.3 ng/mL for normal weight individuals to 28.0 ng/mL for those with obesity class II (P < .001 for a linear trend).

Baseline levels of other vitamin D biomarkers were also lower with higher BMI, including total 25-OHD 3, free vitamin D (FVD), and bioavailable vitamin D (BioD).

Among 2,742 participants with repeated blood collections at year 2, significant mean increases were observed overall at the end of the study period in serum 25-OHD levels (11.9 ng/mL) among those randomized to vitamin D supplementation, compared with little change in the placebo group (–0.7 ng/mL).

There were also significant increases, overall, in mean total 25-OHD, 25-OHD3, FVD, and BioD levels at 2 years among those receiving supplementation, with little or no change in the placebo group.

When stratified by BMI level, however, the magnitude of increase was lower among those with higher baseline BMI (all treatment effect interactions P < .001). For instance, the mean increases in total 25-OHD level at 2 years for supplementation versus placebo were 13.5 ng/mL for those with a BMI less than 25.0 versus only 10.0 ng/mL for those with a BMI of at least 35.0.

Importantly, even after controlling for baseline vitamin D status of sufficiency or insufficiency, BMI was still significantly associated with changes seen with supplementation.

“It was surprising that, even in the context of low vitamin D levels, those with higher BMI still had a blunted response to supplementation, suggesting the interaction between supplementation and BMI with health outcomes is not simply due to higher prevalence of deficiency,” Dr. Tobias said in an interview. “It really does seem that, even with insufficient or low levels at baseline, those with higher BMI are not able to catch up to sufficient levels as well as those with normal BMI.”
 

Mechanisms?

Among leading theories as to why higher BMI would be associated with lower serum vitamin D levels and a lower response to supplementation is that because vitamin D is a fat-soluble vitamin, the increased adiposity and fat storage capacity with higher BMI results in greater removal of the vitamin from circulation.

“Our results are largely consistent with this hypothesis,” the authors noted.

They added that weight-loss studies, including those involving bariatric surgery, have further shown greater increases in serum 25-OHD or circulating vitamin D levels after weight loss compared with baseline.

Other theories suggest that obesity-induced hepatic dysfunction can contribute to impaired vitamin D metabolism.

Without a clear understanding of the exact mechanisms, the potential for addressing the lower vitamin D levels with, for instance, higher doses of supplementation among those with obesity, also remains unclear, Dr. Tobias noted.

“I think once there’s more clarity on what the mechanism is, then it would make sense to consider what doses could be necessary to achieve the internal levels desired,” she said.

The VITAL study received funding from a grant from the National Center for Complementary and Integrative Health and other sources.

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

Gestational diabetes is a significant health problem worldwide that is associated with immediate and lifelong consequences for the affected woman and her infant. Gestational diabetes increases the risk for pregnancy-related complications, such as induced labor, cesarean delivery, and preeclampsia. There is also an increased risk for neonatal complications, including large-for-gestational-age birth weight, shoulder dystocia, birth injuries, lung disease, jaundice, and hypoglycemia. Regardless of birth weight, neonates born to mothers with gestational diabetes have greater adiposity than do neonates born to mothers without obesity and with normal glucose tolerance, and they have a predilection toward obesity and obesity-related metabolic disorders, including T2D in childhood and adulthood. Similarly, women who develop gestational diabetes have an increased lifetime risk for T2D as well as an increased risk for cardiovascular disease even if they do not progress to T2D.

According to the International Diabetes Federation, 1 in 6 pregnancies is affected by gestational diabetes. Risk factors include higher age and BMI, previous history of gestational diabetes, a family history of T2D, and polycystic ovarian syndrome. Patients may have few, if any, symptoms of gestational diabetes, or they may mistake their symptoms for the normal side effects of pregnancy. Potential symptoms include blurred vision, tingling or numbness in the hands and/or feet, excessive thirst, frequent urination, sores that heal slowly, and excessive fatigue. 

The American Diabetes Association (ADA) states that the treatment of gestational diabetes should include medical nutrition therapy, physical activity, and weight management, depending on pregestational weight. Glucose monitoring is essential: Patients should aim for fasting glucose < 95 mg/dL (5.3 mmol/L) and either 1-hour postprandial glucose < 140 mg/dL (7.8 mmol/L) or 2-hour postprandial glucose < 120 mg/dL (6.7 mmol/L). According to the ADA, insulin should be added to lifestyle modifications if needed to achieve glycemic targets. Metformin and glyburide are not recommended as first-line agents because both cross the placenta to the fetus. Long-term safety data are not available for the use of other oral and noninsulin injectable glucose-lowering medications during pregnancy. 

Courtney Whittle, MD, MSW, Diplomate of ABOM, Pediatric Lead, Obesity Champion, TSPMG, Weight A Minute Clinic, Atlanta, Georgia.

Courtney Whittle, MD, MSW, Diplomate of ABOM, has disclosed no relevant financial relationships.

Image Quizzes are fictional or fictionalized clinical scenarios intended to provide evidence-based educational takeaways.

Gestational diabetes is a significant health problem worldwide that is associated with immediate and lifelong consequences for the affected woman and her infant. Gestational diabetes increases the risk for pregnancy-related complications, such as induced labor, cesarean delivery, and preeclampsia. There is also an increased risk for neonatal complications, including large-for-gestational-age birth weight, shoulder dystocia, birth injuries, lung disease, jaundice, and hypoglycemia. Regardless of birth weight, neonates born to mothers with gestational diabetes have greater adiposity than do neonates born to mothers without obesity and with normal glucose tolerance, and they have a predilection toward obesity and obesity-related metabolic disorders, including T2D in childhood and adulthood. Similarly, women who develop gestational diabetes have an increased lifetime risk for T2D as well as an increased risk for cardiovascular disease even if they do not progress to T2D.

According to the International Diabetes Federation, 1 in 6 pregnancies is affected by gestational diabetes. Risk factors include higher age and BMI, previous history of gestational diabetes, a family history of T2D, and polycystic ovarian syndrome. Patients may have few, if any, symptoms of gestational diabetes, or they may mistake their symptoms for the normal side effects of pregnancy. Potential symptoms include blurred vision, tingling or numbness in the hands and/or feet, excessive thirst, frequent urination, sores that heal slowly, and excessive fatigue. 

The American Diabetes Association (ADA) states that the treatment of gestational diabetes should include medical nutrition therapy, physical activity, and weight management, depending on pregestational weight. Glucose monitoring is essential: Patients should aim for fasting glucose < 95 mg/dL (5.3 mmol/L) and either 1-hour postprandial glucose < 140 mg/dL (7.8 mmol/L) or 2-hour postprandial glucose < 120 mg/dL (6.7 mmol/L). According to the ADA, insulin should be added to lifestyle modifications if needed to achieve glycemic targets. Metformin and glyburide are not recommended as first-line agents because both cross the placenta to the fetus. Long-term safety data are not available for the use of other oral and noninsulin injectable glucose-lowering medications during pregnancy. 

Courtney Whittle, MD, MSW, Diplomate of ABOM, Pediatric Lead, Obesity Champion, TSPMG, Weight A Minute Clinic, Atlanta, Georgia.

Courtney Whittle, MD, MSW, Diplomate of ABOM, has disclosed no relevant financial relationships.

Image Quizzes are fictional or fictionalized clinical scenarios intended to provide evidence-based educational takeaways.

Gestational diabetes is a significant health problem worldwide that is associated with immediate and lifelong consequences for the affected woman and her infant. Gestational diabetes increases the risk for pregnancy-related complications, such as induced labor, cesarean delivery, and preeclampsia. There is also an increased risk for neonatal complications, including large-for-gestational-age birth weight, shoulder dystocia, birth injuries, lung disease, jaundice, and hypoglycemia. Regardless of birth weight, neonates born to mothers with gestational diabetes have greater adiposity than do neonates born to mothers without obesity and with normal glucose tolerance, and they have a predilection toward obesity and obesity-related metabolic disorders, including T2D in childhood and adulthood. Similarly, women who develop gestational diabetes have an increased lifetime risk for T2D as well as an increased risk for cardiovascular disease even if they do not progress to T2D.

According to the International Diabetes Federation, 1 in 6 pregnancies is affected by gestational diabetes. Risk factors include higher age and BMI, previous history of gestational diabetes, a family history of T2D, and polycystic ovarian syndrome. Patients may have few, if any, symptoms of gestational diabetes, or they may mistake their symptoms for the normal side effects of pregnancy. Potential symptoms include blurred vision, tingling or numbness in the hands and/or feet, excessive thirst, frequent urination, sores that heal slowly, and excessive fatigue. 

The American Diabetes Association (ADA) states that the treatment of gestational diabetes should include medical nutrition therapy, physical activity, and weight management, depending on pregestational weight. Glucose monitoring is essential: Patients should aim for fasting glucose < 95 mg/dL (5.3 mmol/L) and either 1-hour postprandial glucose < 140 mg/dL (7.8 mmol/L) or 2-hour postprandial glucose < 120 mg/dL (6.7 mmol/L). According to the ADA, insulin should be added to lifestyle modifications if needed to achieve glycemic targets. Metformin and glyburide are not recommended as first-line agents because both cross the placenta to the fetus. Long-term safety data are not available for the use of other oral and noninsulin injectable glucose-lowering medications during pregnancy. 

Courtney Whittle, MD, MSW, Diplomate of ABOM, Pediatric Lead, Obesity Champion, TSPMG, Weight A Minute Clinic, Atlanta, Georgia.

Courtney Whittle, MD, MSW, Diplomate of ABOM, has disclosed no relevant financial relationships.

Image Quizzes are fictional or fictionalized clinical scenarios intended to provide evidence-based educational takeaways.

Bariatric surgery for severe obesity does not appear to raise the risk of esophageal and gastric cancer, a new study shows.

In fact, an analysis of close to 1 million French adults suggests that the weight-loss surgery may offer some protection against these cancers.

The study results present a “clinical paradox,” according to authors of a commentary published this week along with the study in JAMA Surgery. A procedure known to increase the risk of gastroesophageal reflux disease (GERD), and potentially adenocarcinoma of the distal esophagus and gastroesophageal junction, may help shield patients from esophagogastric cancer.

The study marks “an important step toward improving the understanding of potential lifetime risks of bariatric surgery and overall major health benefits of surgically induced weight loss,” commentary authors Piotr Gorecki, MD, and Michael Zenilman, MD, with Weill Cornell Medicine in New York, write.

Recent data indicate that excess body weight is associated with nearly 8% of cancer cases and 6.5% of cancer deaths. Studies also show that bariatric surgery can reduce the risk of some cancers, but whether this extends to esophageal and gastric cancer remains unclear.

To investigate, the researchers used French national data to compare the incidence of esophageal and gastric cancer in 303,709 mostly female patients with obesity who underwent bariatric surgery and a matched group of 605,140 patients with obesity who did not undergo the surgery.

The mean age of the cohort was about 40 years. The mean period of follow-up was 6 years for the surgery group and 5.6 years for the control arm. A total of 337 patients underwent esophagogastric cancer – 83 in the surgical group and 254 in the control group. Gastric cancer was about two times more common than esophageal cancer (225 vs. 112 patients).

The incidence rate of esophagogastric cancer was higher in the control group than in the surgery group – 6.9 vs. 4.9 cases per 100,000 population per year, for an incidence rate ratio of 1.42 (P = .005).

Bariatric surgery was associated with a significant 24% lower risk of esophagogastric cancer (hazard ratio, 0.76; P = .03) and a 40% lower risk of overall in-hospital mortality, defined as “any death occurring during a hospital stay regardless of the cause” (HR, 0.60; P < .001).

The authors also found no significant difference in cancer outcomes and type of bariatric procedure, which included sleeve gastrectomy, gastric bypass, and adjustable gastric banding.

They note that key study limitations include the retrospective design, limited follow-up period, and lack of histologic data on the specific cancers. In addition, the study population was relatively young, whereas esophageal cancer is more common in older people.

But overall, the findings suggest that bariatric surgery can be performed to treat severe obesity without increasing the risk of esophageal and gastric cancer, the authors conclude.

“It seems that the balance between protective factors (weight loss, metabolic effects, and eradication of H. pylori infection) and risk factors (GERD and bile reflux) for cancer after bariatric surgery is in favor of protective factors,” the authors, led by Andrea Lazzati, MD, PhD, of Centre Hospitalier Intercommunal de Créteil, France, explain.

Although the potential protective mechanisms remain unclear, in their commentary, Dr. Gorecki and Dr. Zenilman suggest that a reduction in chronic inflammation and immunosuppression following bariatric surgery could help explain the results.

Although the study provides “reassurance of the protective clinical benefits of weight loss surgery,” more large-scale studies are needed to “better identify, elucidate, and address the pathophysiological processes of bariatric procedure,” Dr. Gorecki and Dr. Zenilman conclude.

No specific funding for the study was reported. Dr. Lazzati has received personal fees from Johnson & Johnson, Medtronic, and Gore. Dr. Zenilman has received personal fees from Academic Medical Professionals Insurance and Mohamed & Obaid Almulla Group.

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

Bariatric surgery for severe obesity does not appear to raise the risk of esophageal and gastric cancer, a new study shows.

In fact, an analysis of close to 1 million French adults suggests that the weight-loss surgery may offer some protection against these cancers.

The study results present a “clinical paradox,” according to authors of a commentary published this week along with the study in JAMA Surgery. A procedure known to increase the risk of gastroesophageal reflux disease (GERD), and potentially adenocarcinoma of the distal esophagus and gastroesophageal junction, may help shield patients from esophagogastric cancer.

The study marks “an important step toward improving the understanding of potential lifetime risks of bariatric surgery and overall major health benefits of surgically induced weight loss,” commentary authors Piotr Gorecki, MD, and Michael Zenilman, MD, with Weill Cornell Medicine in New York, write.

Recent data indicate that excess body weight is associated with nearly 8% of cancer cases and 6.5% of cancer deaths. Studies also show that bariatric surgery can reduce the risk of some cancers, but whether this extends to esophageal and gastric cancer remains unclear.

To investigate, the researchers used French national data to compare the incidence of esophageal and gastric cancer in 303,709 mostly female patients with obesity who underwent bariatric surgery and a matched group of 605,140 patients with obesity who did not undergo the surgery.

The mean age of the cohort was about 40 years. The mean period of follow-up was 6 years for the surgery group and 5.6 years for the control arm. A total of 337 patients underwent esophagogastric cancer – 83 in the surgical group and 254 in the control group. Gastric cancer was about two times more common than esophageal cancer (225 vs. 112 patients).

The incidence rate of esophagogastric cancer was higher in the control group than in the surgery group – 6.9 vs. 4.9 cases per 100,000 population per year, for an incidence rate ratio of 1.42 (P = .005).

Bariatric surgery was associated with a significant 24% lower risk of esophagogastric cancer (hazard ratio, 0.76; P = .03) and a 40% lower risk of overall in-hospital mortality, defined as “any death occurring during a hospital stay regardless of the cause” (HR, 0.60; P < .001).

The authors also found no significant difference in cancer outcomes and type of bariatric procedure, which included sleeve gastrectomy, gastric bypass, and adjustable gastric banding.

They note that key study limitations include the retrospective design, limited follow-up period, and lack of histologic data on the specific cancers. In addition, the study population was relatively young, whereas esophageal cancer is more common in older people.

But overall, the findings suggest that bariatric surgery can be performed to treat severe obesity without increasing the risk of esophageal and gastric cancer, the authors conclude.

“It seems that the balance between protective factors (weight loss, metabolic effects, and eradication of H. pylori infection) and risk factors (GERD and bile reflux) for cancer after bariatric surgery is in favor of protective factors,” the authors, led by Andrea Lazzati, MD, PhD, of Centre Hospitalier Intercommunal de Créteil, France, explain.

Although the potential protective mechanisms remain unclear, in their commentary, Dr. Gorecki and Dr. Zenilman suggest that a reduction in chronic inflammation and immunosuppression following bariatric surgery could help explain the results.

Although the study provides “reassurance of the protective clinical benefits of weight loss surgery,” more large-scale studies are needed to “better identify, elucidate, and address the pathophysiological processes of bariatric procedure,” Dr. Gorecki and Dr. Zenilman conclude.

No specific funding for the study was reported. Dr. Lazzati has received personal fees from Johnson & Johnson, Medtronic, and Gore. Dr. Zenilman has received personal fees from Academic Medical Professionals Insurance and Mohamed & Obaid Almulla Group.

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

Bariatric surgery for severe obesity does not appear to raise the risk of esophageal and gastric cancer, a new study shows.

In fact, an analysis of close to 1 million French adults suggests that the weight-loss surgery may offer some protection against these cancers.

The study results present a “clinical paradox,” according to authors of a commentary published this week along with the study in JAMA Surgery. A procedure known to increase the risk of gastroesophageal reflux disease (GERD), and potentially adenocarcinoma of the distal esophagus and gastroesophageal junction, may help shield patients from esophagogastric cancer.

The study marks “an important step toward improving the understanding of potential lifetime risks of bariatric surgery and overall major health benefits of surgically induced weight loss,” commentary authors Piotr Gorecki, MD, and Michael Zenilman, MD, with Weill Cornell Medicine in New York, write.

Recent data indicate that excess body weight is associated with nearly 8% of cancer cases and 6.5% of cancer deaths. Studies also show that bariatric surgery can reduce the risk of some cancers, but whether this extends to esophageal and gastric cancer remains unclear.

To investigate, the researchers used French national data to compare the incidence of esophageal and gastric cancer in 303,709 mostly female patients with obesity who underwent bariatric surgery and a matched group of 605,140 patients with obesity who did not undergo the surgery.

The mean age of the cohort was about 40 years. The mean period of follow-up was 6 years for the surgery group and 5.6 years for the control arm. A total of 337 patients underwent esophagogastric cancer – 83 in the surgical group and 254 in the control group. Gastric cancer was about two times more common than esophageal cancer (225 vs. 112 patients).

The incidence rate of esophagogastric cancer was higher in the control group than in the surgery group – 6.9 vs. 4.9 cases per 100,000 population per year, for an incidence rate ratio of 1.42 (P = .005).

Bariatric surgery was associated with a significant 24% lower risk of esophagogastric cancer (hazard ratio, 0.76; P = .03) and a 40% lower risk of overall in-hospital mortality, defined as “any death occurring during a hospital stay regardless of the cause” (HR, 0.60; P < .001).

The authors also found no significant difference in cancer outcomes and type of bariatric procedure, which included sleeve gastrectomy, gastric bypass, and adjustable gastric banding.

They note that key study limitations include the retrospective design, limited follow-up period, and lack of histologic data on the specific cancers. In addition, the study population was relatively young, whereas esophageal cancer is more common in older people.

But overall, the findings suggest that bariatric surgery can be performed to treat severe obesity without increasing the risk of esophageal and gastric cancer, the authors conclude.

“It seems that the balance between protective factors (weight loss, metabolic effects, and eradication of H. pylori infection) and risk factors (GERD and bile reflux) for cancer after bariatric surgery is in favor of protective factors,” the authors, led by Andrea Lazzati, MD, PhD, of Centre Hospitalier Intercommunal de Créteil, France, explain.

Although the potential protective mechanisms remain unclear, in their commentary, Dr. Gorecki and Dr. Zenilman suggest that a reduction in chronic inflammation and immunosuppression following bariatric surgery could help explain the results.

Although the study provides “reassurance of the protective clinical benefits of weight loss surgery,” more large-scale studies are needed to “better identify, elucidate, and address the pathophysiological processes of bariatric procedure,” Dr. Gorecki and Dr. Zenilman conclude.

No specific funding for the study was reported. Dr. Lazzati has received personal fees from Johnson & Johnson, Medtronic, and Gore. Dr. Zenilman has received personal fees from Academic Medical Professionals Insurance and Mohamed & Obaid Almulla Group.

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