I am losing my hair terribly. What could cause hair loss in a healthy person?

I lose about 100 hairs a day. The hair comes out easily. Could stress cause something like that. I don鈥檛 blow dry, dye or anything. Btw I am only 21 years oldI am losing my hair terribly. What could cause hair loss in a healthy person?
It may sound like a lot, but 100 strands is just a little bit above normal. But there are a lot of things that can cause hair loss. Of course, stress is a big one, but also certain medications like birth control (when starting and also when you stop taking them), and even too much ibuprofen can do it. Dental problems like infections, a poor diet and a lack of certain vitamins can cause loss, too. This loss could be just a temporary thing, tho. Hair goes thru growth cycles, but if you're really worried, go see a dermatologist.I am losing my hair terribly. What could cause hair loss in a healthy person?
Is this a new development? I lose A LOT of hair every day but on average people lose 75-100 hairs a day so I am pretty sure that there is nothing to worry about. I still have a full head of extremely thick hair. (It may seem more noticeable given the darkness and thickness of your hair) If you want to it may not be bad to go to your doctor and ask about it but I think you are fine.
I have heard of hormone levels causing it. I added a link for you. That one person is an idiot for saying cancer, what an unfunny joke.
it happended to one of my close friend. He drop weight and loss hair. after medical check up and found that he got cancer.
stress
u could have cancer!!!