Body mass index, or BMI, is a new term to most people. However, it is the measurement of choice for many physicians and researchers studying obesity. BMI uses a mathematical formula that takes into account both a person's height and weight. BMI equals a person's weight in kilograms divided by height in meters squared. (BMI=kg/m2).
Risk of Associated Disease According to BMI and Waist Size | |||
| BMI | Waist less than or equal to 40 in. (men) or 35 in. (women) | Waist greater than 40 in. (men) or 35 in. (women) | |
| 18.5 or less | Underweight | -- | N/A |
| 18.5 - 24.9 | Normal | -- | N/A |
| 25.0 - 29.9 | Overweight | Increased | High |
| 30.0 - 34.9 | Obese | High | Very High |
| 35.0 - 39.9 | Obese | Very High | Very High |
| 40 or greater | Extremely Obese | Extremely High | Extremely High |
