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Yes, a new study out today suggests that obesity is “socially contagious.” In other words, if someone you call a friend becomes obese, your chances of joining her rise by 57 percent—even if she lives across the country, believe it or not. It’s not that an actual bug is being passed from person to person; rather, it’s that the more subtle transmission of behaviors (you start joining your friend at his weekly pizza and beer fest) or social norms (a much-admired college roommate is 20 pounds heavier since your last get-together) appears to alter a person’s perception of what’s OK.
But you can harness the power of social networks for good rather than bad, obesity experts say.
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