The body composition measurement often used to assess obesity is the body mass index (BMI). BMI is a simple calculation based on a person’s weight and height, providing an estimation of body fatness. It classifies individuals into categories such as underweight, normal weight, overweight, and obese. While BMI is useful for population-level assessments, it has limitations, as it does not account for muscle mass or fat distribution. Other methods, like waist circumference and body fat percentage analysis, can provide a more comprehensive assessment of obesity and overall health.