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.

BMI is calculated by dividing weight in kilograms by height in meters squared (kg/m 2). The BMI has been referred to as the "hemoglobin A 1c of obesity" in that it provides a snapshot of the patient's ...

The beginning was in 2003. Laws requiring school systems to evaluate children using body-mass index (BMI) instruments—a common approach for grouping people based on height and weight—have passed 29 ...