While pulling out hair can cause something called traction alopecia, it is a total myth that wearing baseball caps too much will cause you to lose your hair. "Your baseball cap would have to be on your scalp so tight that you couldn't wear it in order for it to cause any type of traction or damage," says Kobren. In other words, your cap would have to be pulling hair out of your head (a lot) in order for it to cause permanent hair loss.
Credit: Huseyin Turgut Erkisi / Getty Images
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