... including body mass index and underwater weighing. There are a variety of different ways of combining weight and height to estimate body fatness, but the most common is to divide the weight and in kilograms, by the height in meters multiplied by itself. This is called the body mass index or BMI. ... 30 are said to be overweight, and people with an index over 30 are defined as obese (Speakman, 2001). Researchers found a 5% increase in the risk of heart risk of heart failure for men and a 7% increase for women for each BMI increase of 1 kg/m^2, which is approximately 5 pounds for an indiv...

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