My brother seems to have a problem which he or anybody at his age should not be having. My brother is 20 years old and he has a hair loss problem. He recently went to a dermatologist and asked the doctor why he is losing his hair at such a young age, and the doctor was unable to give him an understandable reply. The doctor said to my brother that he is baffled by the situation. The doctor checked his body, measured his blood pressure, and heart rate and everything was normal or above average. I want to know what factors or reasons are contributing and causing my brother's hair to fall out at an enormous rate at such a young age. (Since the doctor he went to doesn't even know.) Let me give you some background information about my brother so you can have a better idea of his health and from there can possibly rule out a concise explanation for his problem. My brother works out (lifting weights twice a week, eats very intelligently (ignoring fatty foods and snacks), doesn't have stress or any pressure like that and sleeps 6-7 hours a day. Also, very few members in our family have a hair loss problem at such a young age. Well that is everything that I can say about my brother.