Rethinking BMI for Better Heart Health and Obesity Screening

The body mass index (BMI) has long been the go-to marker for obesity and heart risk. It’s the standard tool used to identify elevated risk for cardiovascular disease, type 2 diabetes, and all-cause mortality—and it also serves as the basis for classifying obesity.

Now, a major cardiology study is calling its accuracy into question.

Here’s what they found.