Body mass index (BMI) is a calculation used to estimate your body fat. Based on the BMI score, you may be categorized as being underweight, of normal weight, or overweight. The BMI score may also be ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. If you say you want to ...

For bodybuilders and fitness enthusiasts, changing body composition often reflects hard work and discipline—but knowing body composition is useful for anyone, and for more than just bragging rights.

Researchers have developed a simpler and more accurate method of estimating body fat than the widely used body mass index, or BMI, with the goal of better understanding obesity. Cedars-Sinai ...

Many people with “normal” body mass indexes may still be obese, new research suggests. The study, which will be presented Friday in Chicago at ENDO 2023, the annual meeting of the Endocrine Society, ...