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The beneficial effect of exercise holds across all sorts of activities

Each year in the U.S., more 100,000 people are diagnosed with colon cancer. To see what effect exercise has on lowering this rate, researchers at Washington University and Harvard University combined to review 52 studies over the last 25 years which linked exercise and the incidence of cancer. Overall, they found that those that exercised the most (5-6 hours of brisk walking per week) were 24 percent less likely to develop the disease than those that exercised the least (less than 30 minutes per week).
"The beneficial effect of exercise holds across all sorts of activities," said lead study author Kathleen Y. Wolin, Sc.D. of Washington University. "And it holds for both men and women. There is an ever-growing body of evidence that the behavior choices we make affect our cancer risk. Physical activity is at the top of the list of ways that you can reduce your risk of colon cancer."
So, are there any studies out there that link exercise with a negative outcome?
In a recent study published in the journal Obesity, Dolores Albarracín, professor of psychology at the University of Illinois, did find that people who are shown posters with messages like "join a gym" or "take a walk" actually ate more after viewing these messages than those that saw messages like "make friends."
"Viewers of the exercise messages ate significantly more (than their peers, who viewed other types of messages)," Albarracín said. "They ate one-third more when exposed to the exercise ads."

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