I'm only 18 years old and about a year ago I noticed that I was loosing weight. I used to weigh about 124 pounds now I weigh only 112. My family and friends all tell me that I look too skinny, almost sick, and I want to know why I lost all this weight. I never tried to lose the weight, didn't exercise, didn't eat less, NOTHING. Also after losing the weight other things started happening to me, my hair started to become very thing, I started to get bad breath and have stomach problems. Please help me I don't know what to do!! I want to start to feel better & normal again and know what's causing all of this.