New obesity criteria that add waist and body fat measures to BMI could classify nearly 70% of U.S. adults as obese, according ...

Here’s what to know about body composition numbers and what these metrics mean for your health and performance.

Are good health and obesity mutually exclusive? Not necessarily — but it’s complicated. For years, body size was considered a barrier to most sports, but today that’s starting to change — with ...

Obesity in the United States is no longer a slow-moving crisis. A sweeping redefinition of what counts as unhealthy body fat ...

Recently, an international commission proposed a revised definition of obesity that focuses on how excess body fat affects the body, and factors in waist circumference, rather than simply calculating ...

There are few diagnostic terms in medicine more stigmatized than “obesity,” which affects 41.9% of U.S. adults over 20, according to the Centers for Disease Control and Prevention. But many doctors ...

Obesity is often a combination of genetic and lifestyle factors. Genetics can influence metabolic pathways, appetite control, and energy storage. Leptin resistance can lead to increased appetite and ...

Millions of Americans long considered outside the obesity category may, in fact, face many of the same health risks.

Nearly 70 percent of American adults could be classified as obese under an updated definition that factors in more than just body mass index (BMI). This is the finding of Harvard University ...

If you’ve developed obesity, a variety of treatment options can help you lose weight. Doing so lowers your chances of getting diabetes, heart disease, stroke, high blood pressure, and other diseases ...

Ms. Belluz is a health journalist based in Paris. She is co-writing a book about nutrition and health. “Obesity is a disease,” Oprah Winfrey declared after disclosing her weight loss with an ...