It started when i was 18, people said it was cause i pulled my hair back and other said because i always wear a hat are any of these true?

Thats all crap.

It's in your genes, probably your grandfather lost his hair at a young age as well.

Hang in there, its not the end of the world!!!

it may be due to many reasons. mainly hormonal, genetics. if your father or grandfather are not bald then its mainly hormonal. acupuncture helps. massaging Indian cantheridine hair oil or gingelly oil or almond oil on the head and scalp helps. oil and massage in the night, leave it for the night and take a head shower with shampoo in the morning. atleast thrice per week. REDKEN all soft heavy cream in cosmetics shops helps reduce hair fall and improve the texture. yoga, meditation, correct diet helps. coffee, tea is bad. too horny makes one go bald early. western medicine has little or no positive effects.

genetics, metabolic imbalance, poor diet, stress.... see your doctor to rule out a medical cause and to get a real answer.