Definitive Diagnostic Tool or Part of a Greater Health Matrix? It’s an easily understood calculation: Body Mass Index, popularly known as BMI, computes an individual’s measure of body fat as weight in kilograms divided by height in meters squared. Levels are defined as Underweight if less than 18.5, Normal weight if between 18.5 and 24.9, Overweight if between 25.0 and 29.9, and Obese if above 30. But what does BMI really tell us? This simple formula has nonetheless sparked controversy and continued questioning: Is BMI a quick, easy and efficient …