Is it true that the environment can’t cause hair loss, only your genes can do this?

Environment and behavioral issues do play a role in genetic balding. We call these epigenetic factors and we can see them when identical twins are separated and show different degrees of balding. I had a pair of identical twins, one twin had a hair system the other did not. The one who wore the hair system had advanced balding but the other one did not (only early Class 3 pattern of balding). So you can see in this example who an action taken by one twin altered his balding pattern for the worse (hair systems tend to accelerate hair loss). Stress, is also another such environmental factor that I see all of the time. As a young man comes up to his final exams in school, his hair loss often rapidly increases. Diet is still another factor that is not well understood, but we do see people who live in cold climates and not take Vitamin E supplements, develop a Vitamin D deficiency which can cause hair loss. I can write a book on this, but not hear please.