What's your number -- under 25 or over 35? Body mass index (BMI) may not be a term that's on everyone's lips, but it's important for your health to understand what it is and to know your number.

Roughly 200 years ago, a Belgian mathematician and statistician named Adolphe Quetelet, seeking to characterize “normal man,” observed that adults’ body weight in kilograms is roughly proportional to ...

American children are increasingly tipping the scale, and the extra weight may be putting them at risk for immediate and future health complications, including depression, type 2 diabetes, and heart ...

I'd like to note the importance here is that it is a proxy for health outcomes at a population level. Which means it can be great for clinical research. However, population measures do not necessarily ...

Sarah is an experienced writer and editor enthusiastic about helping readers live their healthiest and happiest lives. Before joining Forbes Health, Sarah worked as a writer for various digital ...

The “healthy” body mass index (BMI) ranges from 18.5 to 24.9. However, BMI is not a one-size-fits-all concept. BMI is a tool researchers often use to track obesity at the population level. Doctors and ...

BMI is an estimate of body composition based on weight and height. For people of any sex, a moderate BMI is usually 18.5 to 24.9. For people assigned female at birth, BMI does have some limitations.

Body Mass Index (BMI), or the calculation of your weight in kilograms divided by the square of height in meters, is one method of determining if someone is at a healthy weight. Measuring one's BMI, ...

Body mass index (BMI) is a measure of body fat based on your weight in relation to your height, and applies to most adult men and women aged 20 and over. For children aged 2 and over, BMI percentile ...