For years, body-mass-index (BMI), has been the health metric millions of us have been fixated on when it comes to determining the state of our health. But now experts say we should be focusing on ...

New research points to a better way to measure obesity than body mass index. Body mass index was first developed in 1832 and has been the standard way to estimate a person’s body fat since the 1980s.

This article was reviewed by Craig Primack, MD, FACP, FAAP, FOMA. We’ll start at the very beginning: Body mass index (BMI) is a measure of someone’s weight compared to their height whereas body fat ...

Smart scales track changes in your muscle mass, body fat percentage and other health metrics — but how do smart scales work, and how accurate are they? When you purchase through links on our site, we ...

The body mass index, or BMI, predates the bathroom scale by more than half a century. But it has not changed with the times. The BMI was created in the 1830s before calculators and computers existed.

A newly published study presented an alternative to the body mass index measurement called the body roundness index. NBC News medical contributor Dr. Natalie Azar explains scrutiny over BMI and how ...

A more sophisticated measurement, called bioelectric impedance analysis, uses a special scale that measures resistance to the flow of an electric current to estimate fat-free body mass and body fat ...

Our body mass index is categorized into underweight, normal, overweight, and obese based on data largely from white middle-aged men—decades ago. For decades, we've used body mass index (BMI) to infer ...

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