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Excessive Television Watching Raises Risk of Obesity, Diabetes

April 8, 2003 (New York) -- Couch potatoes, beware! TV watching is strongly linked to weight gain -- and even light activity can go a long way to preventing the obesity and diabetes that commonly follows.

For the first time, new research provides proof of what many have suspected for years -- couch potatoes and weight gain go hand in hand. But the health risks don't just end there. The study also shows that too much TV watching dramatically raises the risk of developing type 2 diabetes.

In addition, the health risks associated with television watching were significantly greater than those associated with other sedentary activities, such as sewing, reading, or driving a car. Researchers say TV watching seems to be particularly effective at promoting weight gain because it not only reduces physical activity, but it also encourages people to eat more and eat unhealthy foods due to advertising and other food cues on TV.

"Couch potatoes don't move and eat more," says researcher Frank Hu, MD, PhD, of the Harvard School of Public Health. "This is the first scientific study to prove this relationship."

Hu presented the results of his study, which appears in April 9 issue of The Journal of the American Medical Association, today at a media briefing on obesity in New York City.

More weight-loss news from a special obesity issue of The Journal of the American Medical Association.

Weight-Loss Programs Keep Pounds Off

Jury Still Out on Low-Carbohydrate Diets

Obese Children Suffer Like Cancer Kids

New Weight-Loss Drugs Pass First Tests

The study compared television viewing habits of more than 50,000 women who participated in the Nurses' Health Study from 1992 to 1998. During the six years of follow-up, 7.5% of the women became obese and 1,515 women developed type 2 diabetes.

Obesity is generally defined as having a body mass index (BMI, a measurement of weight in relationship to height) of 30 or more, or weighing 20% or more than the recommended weight.

Researchers found that as TV watching increased, weight gain also increased -- leading to more obesity and diabetes. For each two-hour increase in television watching per day, there was a 23% rise in obesity and 14% increase in the risk of diabetes.

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