Exercise and physical activity benefit the body, while a sedentary lifestyle does the opposite – increasing the chances of becoming overweight and developing a number of chronic diseases.
- Only about 30 percent of adult Americans report they get regular physical activity during their leisure time—and about 40 percent of Americans say they get no leisure-time physical activity at all.
- The Nurses’ Health Study found a strong link between television watching and obesity. Researchers followed more than 50,000 middle-aged women for six years, surveying their diet and activity habits. Findings showed that for every two hours the women spent watching television each day, they had a 23 percent higher risk of becoming obese and 14 percent higher risk of developing diabetes. It didn’t matter if the women were avid exercisers: The more television they watched, the more likely they were to gain weight or develop diabetes, regardless of how much leisure-time activity and walking they did. Long hours of sitting at work also increased the risk of obesity and diabetes.
- Researchers at Tokyo Medical University found an association between spending less time watching television and a lower risk of overweight and obesity in older adults, regardless of whether participants met physical activity guidelines. The study followed 1,806 participants between the ages of 65 and 74. Participants were put into one of four categories based on television viewing time. The less time spent watching television, the lower the participants’ risk of becoming overweight or obese.
- Another study analyzed the global effect of inactivity on the increase of diseases. The researchers estimated that physical inactivity accounts for 6% of the burden of heart disease, 7% of type 2 diabetes, 10% of breast cancer, and 10% of colon cancer. Inactivity also causes 9% of premature mortality. These staggering statistics put the true dangers associated with inactivity into a global perspective.
via Staying Active | The Nutrition Source | Harvard School of Public Health.