BMI
Definition
Body Mass Index — a measure of body fat based on height and weight. Calculated as weight (kg) divided by height squared (m²). Categories: Underweight (<18.5), Normal (18.5-24.9), Overweight (25-29.9), Obese (30+). For South Asians, lower cutoffs are recommended.
Formula
BMI = Weight (kg) ÷ Height² (m²)