Inactivity Bad for Obesity
Here’s a stunning revelation, if overweight and obese people exercised even a little bit, they’d be healthier. Jack Kelly of The Pittsburgh Post-Gazette reports:
According to a study published in Science magazine in 2003, the typical American aged 20 to 40 has been gaining about 2 pounds a year. That could be prevented if we burned just 100 additional calories per day. We could burn an additional 100 calories each day by walking briskly for 10 to 15 minutes, dancing for 20, or doing housework for 30.
The Center for Consumer Freedom is a nonprofit group financed mostly by restaurants and food manufacturers, who have a vested interest in keeping us (over) eating. But the CCF's report is partially supported by two recent studies published in the Journal of the American Medical Association.
About two-thirds of American adults are overweight, and half of these are obese, according to the National Institutes for Health. Obesity is defined by the NIH as having a body mass index of 30 or more. A person with a BMI of 40 or higher is considered morbidly obese. Body mass index is a ratio of an individual's weight (in kilograms) divided by the square of his or her height (in meters). A BMI of from 18.5 to 25 is considered optimal.
In the first study, published in JAMA Nov. 7, Katherine Flegal and her collaborators found that people who are overweight, but not obese, are at a lower risk for death than are people of normal weight. (Underweight people and the obese are at a significantly greater risk.)
In the second study, published in JAMA Dec. 4, Dr. Xuemei Sui and his collaborators found that senior citizens who keep fit are at a substantially lower risk for death, even if they are overweight.
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