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If you've always been a little rounder than you'd like, don't blame yourself, or all those snacks you ate watching football yesterday. Now you can blame your GRANDPARENTS for chain-smoking in their living room with the windows closed.
A new study just linked unwanted body fat to our grandparents' smoking habits. Specifically, grandfathers who started smoking early.
It found you're more likely to be overweight if your grandfather started smoking before he turned 13. It's not clear why, but they say it suggests that exposing ourselves to certain substances could affect our kids' or grandkids' health, not just our own.