The Body Mass Index (BMI) is a widely used measurement to assess obesity in adults. It is calculated by dividing a person's weight in kilograms by their height in meters squared. BMI provides a simple numerical value that classifies individuals into categories like underweight, normal weight, overweight, or obese. While it does offer a general idea of a person’s body composition, it does not directly measure body fat or account for muscle mass or distribution. Therefore, additional assessments may be necessary for a more comprehensive understanding of an individual’s health status.