Obesity

Overweight and obesity are defined by the WHO as abnormal or excessive fat accumulation that presents a risk to an individuals health.

Overweight and obesity are major risk factors for a number of chronic diseases, including diabetes, cardiovascular diseases and cancer and while it was once an issue only in high income countries, overweight and obesity has now dramatically risen in low- and middle-income countries.Such countries are now facing a "double burden" of disease, for while they continue to deal with the problems of infectious disease and under-nutrition, they are also experiencing a rapid upsurge in chronic disease risk factors such as obesity and overweight, particularly in urban settings.

What is Obesity?

Obesity and overweight have in the last decade become a global problem - according to the World Health Organization (WHO) back in 2005 approximately 1.6 billion adults over the of age 15+ were overweight, at least 400 million adults were obese and at least 20 million children under the age of 5 years were overweight.

Obesity Management

Obesity and Hormones

Obesity and Fractures

Obesity and Fast Food

Causes of Obesity and Overweight

What does Sleeve Gastrectomy Involve?

Obesity and Respiratory Disorders

Obesity Epidemiology

Dieting for Obese Children

Obesity, What Can be Done?

Obesity in Pregnancy

See more featured articles »

Obesity and Diabetes

Obesity and Sexual Health

Obesity and Anesthesia

Fat Mass and Obesity-Associated Gene (FTO)

Obesity in Adults

Obesity and Skin Problems

Obesity and Metabolic Syndrome

What is Obesity Paradox?

Abdominal Obesity and the Metabolic Syndrome

Obesity and Autism

Obesity and Arthritis

Obesity and Blood Pressure

Obesity and Stress

Obesity and Cancer

Obesity and Heart Disease

Obesity and Genetics

Obesity and Periodontitis

What is Body Mass Index (BMI)?

Obesity and Exercise

Obesity and Infertility

Why is Visceral Fat Dangerous?

Obesity and Sleep

Obesity in Children

Obesity and Depression

Latest Obesity News and Research

Scientists rethink GLP-1 delivery to improve dosing, tolerability, and adherence

The review highlights nanocarriers, microspheres, hydrogels, microneedles, long-acting formulations, and co-formulations as promising but mostly early-stage strategies that still require stronger long-term clinical evidence.

27 May 2026

How do everyday spices help protect the heart?

A Nutrition Reviews supplement article reviewed controlled studies showing that culinary spice and herb blends may improve selected cardiometabolic risk markers, including post-meal triglycerides, insulin responses, inflammation, endothelial function, and 24-hour blood pressure. The review also highlighted exploratory evidence that spices and herbs may influence immune-cell activity, circulating phytochemical metabolites, and gut bacterial composition, while emphasizing the need for longer and more diverse studies.

27 May 2026

New mathematical model tracks microbial contribution to human digestion

Food labels make calories seem simple. They show the number of calories per serving, which is calculated based on how much fat, carbohydrates and protein the food contains.

27 May 2026

Ghrelin rises in depression despite obesity’s usual appetite-hormone suppression

Researchers found that both acylated and deacylated ghrelin were elevated in unmedicated adults with major depressive disorder and obesity compared with non-depressed adults with obesity. The cross-sectional findings suggest ghrelin-system dysregulation may be linked to depression in obesity, but larger longitudinal studies are needed to test whether ghrelin is a reliable biomarker.

27 May 2026

Can AI help build a fairer food system from farm to plate?

AI could help make food systems more personalized and climate-resilient by linking nutrition, health, farming, logistics, and sustainability data. The review highlights promise in precision nutrition, vertical farming, traceability, and smarter supply chains, while warning that privacy, equity, energy use, data silos, and governance gaps must be addressed.

27 May 2026

Why blood pressure rises faster in women after midlife

This review examines how sex-specific blood pressure trajectories are shaped by genetics, hormones, metabolic risk factors, lifestyle exposures, environmental stressors, and medical treatments. It highlights that women generally have lower blood pressure earlier in life but may experience steeper increases with aging, especially around and after menopause, with exogenous stressors appearing to have a greater impact in women than in men.

27 May 2026

Retatrutide reshapes metabolism in obesity and type 2 diabetes, study finds

Retatrutide altered circulating metabolites and lipids linked to fatty acid oxidation and insulin resistance in people with obesity, with or without type 2 diabetes. These biomarker changes suggest improved metabolic health, but the post-hoc analysis remains hypothesis-generating and does not prove direct clinical benefit.

26 May 2026

New analysis shows obesity rates plateauing in many countries

An international large-scale study involving the University of Granada (UGR) examines obesity trends since the 1980s and reveals that the increase has slowed, stabilized, and even reversed in many countries, though it is still rising in developing nations.

26 May 2026

Tomato-soy juice curbs inflammation in obese adults

Drinking tomato-soy juice loaded with compounds shown in animal studies to promote health lowered pro-inflammatory proteins in healthy adults with obesity after four weeks, a new study found.

26 May 2026

Chronic liver disease threatens millions across Europe, report finds

Europe is facing a growing chronic liver disease threat, according to a new Series published today in The Lancet Regional Health – Europe, that engaged more than 75 co-authors from 30 countries and was led by the Barcelona Institute for Global Health (ISGlobal), an institution supported by the "la Caixa" Foundation.

25 May 2026

Indian adapted Mediterranean diet targets inflammation in heart disease trial

The paper describes a single-center randomized controlled trial testing whether an Indian Adapted Mediterranean Diet can reduce dietary inflammation in adults with stable coronary artery disease or moderate-to-high cardiovascular risk. The protocol will assess changes in the Dietary Inflammatory Index, inflammatory biomarkers, cardiometabolic risk factors, body measurements, and metabolic hormones over six months.

25 May 2026

Researchers link surgical weight loss to reduced female cancer mortality rates

Substantial and sustained weight-loss has been linked to a reduced risk of cancer and cancer-related death, mainly in women. Two new studies now provide clues to why the risk is reduced - and suggest that gender, metabolism and genetics may play a crucial role.

25 May 2026

Food insecurity links to poorer mental and physical health in Tasmania

Food insecurity among adults in Tasmania was strongly associated with lower diet satisfaction and poorer self-rated mental and physical health, with diet dissatisfaction showing the strongest link. The findings suggest that food insecurity limits not only nutrition, but also food choice, agency, wellbeing, and equitable access to acceptable, affordable, and culturally appropriate diets.

24 May 2026

Blood carotenoids offer the clearest signal of fruit and vegetable eating habits

The review finds that several candidate biomarkers may help estimate fruit and vegetable intake more objectively than self-reported dietary tools, but most remain limited by specificity, sampling burden, supplement use, or incomplete validation. Blood and skin carotenoids appear strongest for habitual intake, while vitamin C, folate, urinary flavonoids, hippuric acid, and potassium may be more useful for short-term intake or intervention adherence.

24 May 2026

New clinical guidelines outline strategies to improve postpartum cardiovascular care

A new Expert Consensus Decision Pathway by the American College of Cardiology (ACC) provides recommended strategies for improving postpartum care for individuals with and at risk for short- and long-term cardiovascular disease (CVD).

22 May 2026

Semaglutide helps patients who gain weight after bariatric surgery

New UCL research supports use of the weight loss drug semaglutide for patients who do not get enough benefit from bariatric surgery.

22 May 2026

NIH researchers discover how weight-loss drugs alter brain cells

A team of researchers at the National Institutes of Health (NIH) have unveiled new details about the events GLP-1 receptor agonists trigger within neurons, which have been largely unexplored until now.

22 May 2026

Research show worsening health trends for post-1946 generations

Younger generations appear to be experiencing poorer health earlier in life than previous generations, according to a review of studies comparing national birth cohort datasets involving tens of thousands of people across the UK born since 1946.

22 May 2026

Weight loss helps older AF patients slim down, but does not ease symptoms

An 8-month low-calorie diet plus behavioral support helped older adults with overweight or obesity and persistent atrial fibrillation lose weight safely, with no intervention-related serious adverse events. However, the LOSE-AF trial found no meaningful improvement in AF symptoms, rhythm control, AF burden, cardiac remodeling, or further AF procedure rates compared with usual care.

22 May 2026

Study supports routine childhood screening for type 1 diabetes

For ten years, the Fr1da study, coordinated by Helmholtz Munich, has been investigating whether early stages of type 1 diabetes in children can be detected in routine pediatric care.

21 May 2026