linked sedentary lifestyles to 23 percent of deaths from major chronic diseases. For example, physical activity has been shown to reduce the risk of developing or dying from heart disease, diabetes, colon cancer, and high blood pressure. On average, people who are physically active outlive those who are inactive. Two Final Points 1. A 40-year-old nonsmoking male who is obese will lose 5.8 years of life expectancy. 2. A 40-year-old nonsmoking female who is obese will lose 7.1 years of life expectancy. (Peeters A. Barendregt JJ, Willekens F, Mackenbach JP, Al Marnun a, Bonneux L. Overweight and obesity by middle age are associated with shortened lifespan. Ann Intern Med 2003; 128: 24-32)
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