Hi, It is not inevitable I am six months out I have always had very fine very thin hair so this was a major worry for me. I have heard hair loss can start anytime after surgery up to six months so hopefully I am beyond it now. I was very careful to make sure I am getting enough protein. I have been taking biotin, a B complex, and collagen caps. I also have been using Nioxin shampoo and conditioner which I swear by.