Body Mass Index (BMI)A low-cost and easy-to-perform method of screening for weight category, for example underweight, normal or healthy weight, overweight, and obesity. It is not a direct measure of body fatness, but correlates moderately with direct measures, such as bioelectrical impedance, underwater weighing, dual energy x-ray absorptiometry, and skinfold measures. The only measures required to calculate BMI are height and weight. |