Smoking Causes Baldness

What could cause baldness 21yo Guy?

I'm kindof worried about my friend, he is 21 and he is really losing his hair. I asked about it because I can not think a good way to use it. "Then, go bald, eh? "It is true that this is not normal? Used to have very thick hair in high school it was only 5-6 years. Not Kemo (I know) there is maybe just a bad diet? He drinks and smokes marijuana and cocaine snuff sometimes. Would it be a …. something he has done … too?

It is more common than we want to know. All of this is genetics. His mother's genes specifically. You may very well Rogaine shampoo and offer a shortcut. Balding with long hair is a dirty look.

Does smoking cause hair loss?