I don't have anorexia. The fainting was happening when I was 14, and I'm 18 now. I did, and still do (at a lesser extent) suffer with an eating disorder, but I have been eating much more; I have been trying to eat around 2000 calories for the past few weeks and I have been successful at doing it. I'm just weary on what is causing this hair loss. I did read an article which said something along the words of 'if your body isn't consuming enough calories, your body won't have enough energy to run it. There won't be enough energy in your body to support hair growth, since the energy is primarily is going to go to support the more vital things in your body'