
Your Body Mass Index (BMI) is a measure to help assess if you're at a healthy weight and if weight loss is necessary. It can calculate the amount of fat your body consists of and help you decide what is a healthy weight for you.
Risk of Associated Disease According to BMI and Waist Size |
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| BMI | Waist less than or equal to 40 in. (men) or 35 in. (women) |
Waist greater than 40 in. (men) or 35 in. (women) |
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| 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 |
Women: If your Body Mass Index is 27.3 or higher, you are defined as overweight.
Men: If your Body Mass Index is 27.8 or higher, you are defined as overweight.
If you know how much of your weight is made up of fat, it can help you determine the amount of fat loss you need to achieve as opposed to just simple weight loss. Many people choose to use their Body Mass Index as their measurement for their diet and weight loss goals.