Waist-to-hip ratio (WHR) is one of several measurements used to determine if someone could be referred to as being overweight, and if that excess weight is putting their health at risk. It is used as a measurement of obesity, and is a possible indicator of other more serious health conditions.
WHR measures the ratio of waist circumference to hip circumference, and determines how much fat is stored on the waist, hips, and buttocks.
The World Health Organisation states that abdominal obesity is defined as a waist-hip ratio above 0.90 for males and above 0.85 for females. Abdominal obesity occurs when excessive abdominal fat around the stomach and abdomen has built up to the extent that it is likely to have a negative impact on health.