Went to see my derm. today. she assured me that accutane does not cause bone loss. I guess it was a controversial subjuct but they proved it false. She said it is a very safe drug, especially if you are young and healthy. she said I could go on it again but Im going to do Tetrecycline and benzaclin for a couple months and see how it works. She also said a person cannot develop an immunity to tetrecycline and it does not harm your digestive system.