The body measurement often used to assess obesity risks is Body Mass Index (BMI). BMI is calculated by dividing an individual's weight in kilograms by the square of their height in meters. It categorizes individuals into different weight categories, such as underweight, normal weight, overweight, and obese. While BMI is a useful screening tool for assessing potential health risks associated with being overweight or obese, it does not directly measure body fat or account for factors such as muscle mass or distribution. Therefore, further assessments may be necessary for a comprehensive evaluation of obesity-related health risks.