Body Mass Index (BMI) News and Research

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Body Mass Index (BMI) is a measure that relates body weight to height. BMI is sometimes used to measure total body fat and whether a person is a healthy weight. Excess body fat is linked to an increased risk of some diseases including heart disease and some cancers.

Study finds vegetarians less likely to develop several common and rare cancers

A large North American cohort study found that vegetarian diets were linked to lower risks of several cancers, including colorectal, stomach, breast, prostate, and lymphoproliferative cancers. No evidence suggested that vegetarian eating increased cancer risk for any site.

14 Aug 2025

PFAS exposure increases risk of weight regain after adolescent bariatric surgery

Adolescents who undergo bariatric surgery face a higher risk of weight regain, which can undermine treatment success and long-term health, if they have elevated blood levels of per- and polyfluoroalkyl substances (PFAS) prior to the procedure, according to new USC research.

14 Aug 2025

Pandemic left measurable changes in teen brains, hormones, and immunity

Adolescents assessed after COVID-19 lockdowns showed lower daily cortisol, higher inflammation, and reduced prefrontal cortex activity compared to matched pre-pandemic peers, suggesting widespread stress-related biological changes. These alterations mirror patterns seen after prolonged early-life stress, raising concerns about long-term health risks.

13 Aug 2025

High-potassium diets show consistent mental health benefits

Higher intakes of certain dietary minerals are linked to lower depression risk, with potassium showing consistent benefits in both U.S. and Korean adults. Patterns differ by country, sex, and age, highlighting the role of cultural diets and nutrient bioavailability in mental health.

12 Aug 2025

New Canadian guideline highlights expanded role of obesity medications

"Pharmacotherapy can help people living with obesity improve overall health, not just lose weight," says Dr. Sue D. Pedersen, MD, endocrinologist and obesity medicine specialist in Calgary, and lead author of this guideline. "The goal of obesity medications is to improve metabolic, mechanical, and/or mental health, and improve quality of life, incorporating treatment goals that are important to each individual patient."

11 Aug 2025

Diabetes risk hinges on how you cook potatoes

Research indicates that potato consumption and its preparation methods impact type 2 diabetes risk, with substitutions offering potential health benefits.

11 Aug 2025

Epigenetic breakthrough: $200 blood test spots diabetes heart risk better than standard tools

Researchers have developed a blood-based DNA methylation risk score that predicts first macrovascular events in newly diagnosed type 2 diabetes patients more accurately than current cardiovascular risk tools. The score, when combined with clinical factors, could help target early prevention in high-risk individuals.

11 Aug 2025

Prediabetes mortality link strongest in 20–54 age group

In a large US study, prediabetes was linked to higher mortality risk in younger adults aged 20–54, but not in older groups, after adjusting for demographics, lifestyle, and comorbidities. Targeted prevention strategies could help reduce early deaths in working-age populations.

11 Aug 2025

Researchers uncover dozens of traits driven by maternal versus paternal genes

Researchers developed a high-accuracy method to infer whether genetic variants come from the mother or father without needing parental genomes, analysing 286,666 UK Biobank participants. They uncovered over 30 parent-of-origin effects on traits from growth and metabolism to diabetes, many showing opposite effects depending on parental source.

7 Aug 2025

Sweetened tea doesn’t offer the same health benefits

Unsweetened tea is associated with reduced mortality risk, while sugar-sweetened varieties show no significant health benefits, according to recent studies.

7 Aug 2025

Vitamin D supplementation linked to improved cardiometabolic health

A latest systematic review and meta-analysis conducted by scientists from institutions across China and the United States has uncovered promising insights into how vitamin D supplementation can significantly impact cardiometabolic health.

6 Aug 2025

Eating French fries raises type 2 diabetes risk, major study finds

A large, multi-decade cohort study found that frequent French fry consumption raises type 2 diabetes risk, while baked, boiled, or mashed potatoes do not. Swapping any type of potato for whole grains, but not white rice, lowers diabetes risk.

6 Aug 2025

Magnesium deficiency drives higher mortality in hyperlipidemia

MgDS serves as a potential biomarker for mortality risk in hyperlipidemic adults, emphasizing the need for targeted approaches to manage cardiovascular health.

6 Aug 2025

Mother’s genetics may play an important role in influencing her child's weight

A mother's genetics may play a bigger role in determining whether a child becomes overweight than a father's, as a result of a concept known as genetic nurture, finds a new study led by UCL researchers.

5 Aug 2025

Children’s obesity often traced back to parental genes

A new study finds that kids with obesity are more likely to have obese parents because they inherit obesity-related genes, and to a smaller extent, are impacted indirectly by genes carried by the mother – even when those genes aren't passed down.

5 Aug 2025

Breast milk fatty acids help babies sleep longer, study finds

Researchers found that higher levels of polyunsaturated fatty acids (PUFAs) in human milk are associated with longer sleep duration in exclusively breastfed two-month-old infants. The strongest effects were observed for daytime (diurnal) sleep, especially with omega-3 and omega-6 fatty acids.

5 Aug 2025

Which milk is safer for your heart? Decades of Norwegian data provide the answer

A major Norwegian cohort study finds that higher intake of whole milk is linked to increased risk of cardiovascular and all-cause mortality, while low-fat milk shows no such association. The research supports recommendations to prefer low-fat milk for heart health.

5 Aug 2025

Cannabis use disorder triples five-year risk of oral cancer

Research shows cannabis use disorder triples the risk of oral cancer, challenging perceptions of cannabis safety and prompting calls for health screenings.

5 Aug 2025

Impulsivity shapes diet and gut bacteria in healthy adults, study finds

Impulsivity in healthy adults is linked to unhealthy dietary choices, such as higher intake of alcohol and sugary drinks and lower fiber consumption. These dietary behaviors, in turn, are associated with changes in specific gut bacterial genera, highlighting an indirect pathway between personality traits and the gut microbiome.

4 Aug 2025

HIV trial points to semaglutide as a new anti-aging contender

Once-weekly semaglutide significantly slowed epigenetic aging in adults with HIV-associated lipohypertrophy, as measured by multiple DNA methylation clocks in a randomized controlled trial. These exploratory findings suggest GLP-1 receptor agonists could impact biological aging but require further validation in broader populations.

4 Aug 2025