Hats will cut off circulation from your heart to your brain and upper skull, thus being the major factor behind baldness. More than any hormone in your body. It also causes brain damage.
The rundown: 1. minoxidil 2.) finasteride if you're losing hair.
Hats. hanging upside down. combing too much. Combing too little. masturbating too much, becoming a priest and not having sex to save hair. All old fairy tales.