BAI is a ration of height and hip width, which will give you more accurate information about your weight. Why is BAI better than BMI? Specialists at the University of Southern California in Los Angeles say that BMI may not be suitable for certain body types. For example, if you have athletic body, your BMI may give you the same number, as if you were somewhat overweight. BAI is more accurate in determining if the person has unhealthy fat and make a clearer difference between muscle mass and fat mass.
So how is the BAI actually determined? According to the researchers, the formula of BAI is:
BAI=(hip/height x the square root of height) minus 18.
This may seem a bit too complicated for regular check ups, so you can calculate your BAI online.
The hip circumference is measured at the widest point of the buttocks. The BAI from 21 to 33 percent means that you have healthy body fat, while the number that is above 33 percent indicates that you are overweight.