Agony Aunt

Dear Amy: I have always been thin and fit. I eat well and exercise. Like most people, I have friends and family who struggle terribly with weight issues. I have read volumes about the genetic origins of obesity and want to be sensitive to this issue.

I can’t help but noticing, however, that the overweight people I know eat a lot more than I do, exercise less and generally lead far less healthy lifestyles. Am I to believe they’re genetically prone to these behaviors? Please help me to understand the science!

— Trying Not to Judge

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