A Body Shape Index (ABSI) Calculator

Use our calculator to get the ABSI score, just fill the required fields and our calculator will give you the result automatically.

A Body Shape Index (ABSI) is a measure for assessing the health impact of a given human height, weight and waist circumference (WC). The inclusion of WC is thought to make the BSI a better indicator of the risk of overweight death than the standard body mass index. ABSI is only marginally correlated with height, weight, and BMI, indicating that it is independent of other anthropometric variables in predicting mortality. BMI has been criticized for not distinguishing between muscle and fat mass and therefore may be elevated in people with increased BMI due to muscle development rather than fat accumulation due to overeating. Higher muscle mass can lower your risk of premature death. A high ABSI corresponds to a higher proportion of central obesity or abdominal fat. In a sample of Americans who participated in the National Health and Nutrition Examination Survey, mortality rates in some subjects were high with both high and low BMI, which is a well-known conundrum associated with BMI. In contrast, the mortality rate increased in proportion to the increase in ABSI values. The linear relationship was not affected by adjustments for other risk factors, including smoking, diabetes, high blood pressure, and serum cholesterol.

The equation for ABSI is based on a statistical analysis of shape and derived from allometric regression (with waist and height in meters and weight in kg): ABSI = \dfrac{Waist \ circumference}{BMI^{\frac{2}{3}}*Height^{\frac{1}{2}}} ABSI_z = \dfrac{ABSI-ABSI_{mean}}{ABSI_{sd}}

The ABSI z score is calculated based on the mean and standard deviations of the ABSI calculated for a given age and gender. The ABSI z scale is used to measure the level of risk of premature death.