Why am I losing my hair? I'm only 25.?

I have been losing a SIGNIFICANT amount of hair in the past few months. I found more than half the hair I have now in my shower drain. I'm not on any medications except a topical acne gel. What could be causing this?Why am I losing my hair? I'm only 25.?
check the links below for natural homemade beauty tips to:-- Hairloss/Hairfall

http://geebal.blogspot.com/2006/08/natur



Modern hairloss treatments

http://geebal.blogspot.com/2007/10/hair-



Vitamins for Hair Loss/growth

http://geebal.blogspot.com/2007/10/vitamWhy am I losing my hair? I'm only 25.?
You loose over 100 hairs a day...You probley just haven't

noticed it before...I pull alot of of hair out of my hair, and I have to clean the drain almost every morning..
stress , possible damage to the hair... could of been a good protein in the gel and now you aint using it it could be just noticible
Heredity...sickness.



Maybe a shampoo, since my mother had her hair falling out because of a specific type of shampoo.