Body mass index (BMI) is a measure of body fat based on height and weight. It is used to screen for weight-related health problems such as obesity, overweight, and underweight. BMI is calculated using the following formula: weight (kg) / (height (m))^2.
BMI is an important tool for assessing weight-related health risks. It is used by doctors, nurses, and other healthcare professionals to help patients make healthy lifestyle choices. BMI can also be used to track weight loss or gain over time.