A crude measure of weight relative to height, BMI is commonly used to diagnose obesity—even though many experts and professional groups agree it’s an imperfect tool that on its own reveals very little about someone’s health.

“We recommend that BMI should be used only as a surrogate measure of health risk at a population level, for epidemiological studies, or for screening purposes, rather than as an individual measure of health,” the report reads.

In a new report, global health experts are urging that we redefine the measurements used to determine whether someone is "obese".

It’s estimated more than one billion people in the world are living with obesity as defined by the current definition that relies solely on body mass index or BMI. Now health care experts say one-size-does-not-fit-all.

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.

New guidance from a team of health experts around the world proposes expanding the definition of obesity beyond the popular body mass index (BMI) measure.