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Walking reduces risk of obesity 24 percent
Saturday, September 20, 2003 8:15 am Email this article
Brisk walking an hour a day reduces the risk of obesity by 24 percent and diabetes by 34 percent according to a study from researchers at Harvard University in Boston, Mass.
Standing or walking around at home for two hours per day was associated with a 9 percent decrease in the risk of obesity and a 12 percent reduction in the risk of diabetes.
In contrast, watching television for two hours per day increases the risk of obesity 23 percent and diabetes 14 percent, whereas sitting at work for two hours per day increases the risk of obesity 5 percent and diabetes 7 percent.
It was estimated that 30 percent of new cases of obesity and 43 percent of new cases of diabetes could have been prevented in this study by either 30 minutes of brisk walking per day or reducing TV watching by 10 hours per week.
The obesity part of the study followed 50,277 women from 11 states who were part of the Nurses’ Health Study for six years, whereas the diabetes part of the study followed 68,497 women.
Hu F, Li T, Colditz G, Willett W, Manson J. Television watching and other sedentary behaviors in relation to risk of obesity and type 2 diabetes mellitus in women. JAMA. 2003 Apr 9, 289(14):1785-91.
Department of Nutrition
Harvard School of Public Health
Boston, Mass 02115
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