Body Roundness Index (BRI)

The Body Roundness Index (BRI) is a newer measurement that estimates how round or lean your body shape is using your height and waist circumference. Unlike BMI, which only considers weight relative to height, BRI specifically captures abdominal fat distribution — the type of fat most strongly linked to health risks like heart disease and diabetes. A higher BRI suggests a more round body shape with more central fat, while a lower BRI indicates a leaner silhouette.

The Body Roundness Index is a geometric index calculated from waist circumference and height using an eccentricity-based formula: BRI = 364.2 u2212 365.5 u00d7 u221a(1 u2212 [WC/(2u03c0)]u00b2 / [0.5u00d7height]u00b2). It models the human body as an ellipse, with values typically ranging from 1 to 16. Unlike BMI, BRI differentiates between central and peripheral adiposity and has shown superior correlation with visceral adipose tissue measured by DEXA and MRI. Studies suggest BRI may better predict metabolic syndrome, cardiovascular risk, and all-cause mortality than BMI alone.

Many patients at Accord Medical have a normal BMI but carry excess abdominal fat — a profile that BRI catches while BMI misses. Understanding your BRI alongside other measures gives a more complete picture of metabolic health and weight management progress than any single number alone, allowing Dr Joseph Wang to personalise treatment plans more effectively.