A group of 58 researchers is calling for a new, better way to measure obesity and excess body fat that goes beyond BMI. Here's what they recommend using instead.

Obesity affects over 1 billion people globally, with 40 percent of U.S. adults classified as obese under the present framework,

Body Mass Index, or BMI, has long been criticized as an unreliable method for measuring obesity — and now a group of experts is sharing new recommendations for how to use it.