So, I'm only 20 years old (female) and my hair started thinning shortly after I started college at 18 years old. I used to have thick, wavy, Hermione-Granger-in-first-Harry-Potter type hair, and now it's extremely thin and this is causing bouts of anxiety about the appearance of my hair to others and how its future on my own head will be. I'm not extremely stressed, and my diet hasn't changed.

My mother has thin hair as well, but I would think it odd for hair to start thinning this much at such a young age.

What are different reasons you all think it may be?

There aren't any bald spots, just very thin (thinnest being the very back of my head where the part ends, the part of the head that often touches seats and pillows, and I'm afraid of that spot going bald).

Thank you for any help, I'm extremely concerned about it.