Body Mass Index - Version 1.0 Body Mass Index is a relation of your weight to your height, which allows you to find out if you fall into underweight, normal, overweight, or obese category. Body Mass Index is an important indicator as it helps you define if you have an increased risk of heart disease and other issues associated with excess body fat. Body Mass Index applies to adult men and women. It is used to measure overweight and obesity. Body Mass Index of 25 or higher is indicative of higher risk for such diseases as heart disease, type 2 diabetes, high blood pressure, gallstones, breathing problems, and even certain cancers, which is why it is important to know your BMI. Body Mass Index can be used for men and women (except pregnant women) of all ethnic groups. Athletes may have a high Body Mass Index score because of increased muscle mass, not body fat. To calculate your Body Mass Index, you need to enter your weight and height into the program. You can use the English measurement system (feet and pounds) or the Metric one (kilograms and centimeters). BMI is not