9 Surprising Scientific Facts About Sisters

There's something about sisters that make everything okay: sweet, sensible, keeper of secrets, these behind-the-scenes operators are the balm that keeps family bonds warm and fuzzy. (Except for when you borrow her clothes.) And science backs this up: Sisters not only are proven to be good for our mental health, but help their brothers snag dates! But it's not all good news. To hear more about the impact sisters have, both positive and negative, on you (if you have sisters) or your kids (if they do), see the slideshow below, which is full of surprises.

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Holy moly #4! Think that's true for your family?

 

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Behavior & Development behavior