Recent research suggests that even if your weight is in the normal range, if you have a high waist-to-hip ratio, you have a higher risk of death than those considered obese based on BMI
The risk of cardiovascular death was 2.75 times higher, and the risk of death from all causes was 2.08 times higher in people of normal weight with central obesity, compared with those with a normal BMI and normal waist-to-hip ratio
Research indicates your waist size may also be a more effective measure for assessing obesity-related hypertension risk.
To determine your waist to hip ratio, measure the circumference of your hips at the widest part, across your buttocks. Then measure your waist at the smallest circumference of your natural waist, just above your belly button. Divide your waist measurement by your hip measurement to get the ratio.
Another even simpler method to figure out if you have a weight problem is to measure only your waist circumference (the distance around the smallest area below the rib cage and above your belly button). Waist circumference is the easiest anthropometric measure of total body fat. A general guide for healthy waist circumference is as follows: