On this page, you can calculate your body shape index (BSI or ABSI). The ABSI is said to be more accurate than the BMI at predicting health risks by incorporating particularly harmful abdominal fat into the calculation. The ABSI z-score is particularly informative, comparing one's own score with the average values of the population (in the US) and thus determining an above- or below-average risk. Diseases associated with increased abdominal fat include heart attack, high blood pressure, stroke, and arteriosclerosis.