BMI stands for Body Mass Index. It is a measurement that assesses body fat based on an individual's height and weight. BMI is commonly used as a screening tool to categorize individuals into various weight status categories, including underweight, normal weight, overweight, and obesity. While BMI provides a useful estimate of body fat, it does not account for factors like muscle mass, bone density, or distribution of fat. Consequently, it should be considered alongside other health indicators for a comprehensive understanding of an individual's health status.