Genetic hair loss is the most common type of hair loss, if not you must see a skin doctor to see if it's a chimical poisonning or something you're eating.

Dont get too much Vitamin A. Or whatever it is thats in carrots. You're body tries to rid itself of this when you get too much, and guess where its stored? Yep, body hair.

Happened to a teachers friend once. She would wake up with tons of hair on her pillow. Cut back on it.