From Jennifer R. Scott,
Your Guide to Weight Loss.
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Q: What is BMI?

A: Today, obesity is most often measured by using a mathematical formula called a Body Mass Index. BMI can be determined by dividing your weight in pounds by your height in inches squared and then multiplying by 705. For example, a woman who is 5'6" and weighs 190 would have a BMI of 31.

Height of 5'6" = 66 inches 66 squared = 4,356 190 divided by 4,356 = 0.0436 0.0436 x 705 = 30.75 (which would be rounded up to a BMI of 31)

Note: This calculation is based on the formula example from: The Calorie Council

Q: What does my BMI mean?

A:

• An individual is considered underweight if their BMI is less than 18.5.
• A BMI of 18.5 to 24.9 is considered a "normal" weight.
• A BMI of 25 to 29.9 is considered overweight.
• Individuals who fall into the BMI range of 25 to 34.9 begin having some health risk concerns. Specifically those who have a waist size of more than 40 inches for men, or 35 inches for women, have a higher risk for obesity-related health problems such as diabetes, high blood pressure, and heart disease.
• A BMI of 30 or more qualifies as individual as obese.
• A BMI over 40 indicates that a person is morbidly obese.