My doctor diagnose me with Hashimoto Thyroiditis this week. Today is only my second day of taking Levothyroxine 75 MCG. My tsh is at 20.3. My thyroid perxidase autoantibodies are at 82 U/ml. The normal randge for the tpa is 60 and below. Web sites say this medicine with give a person bone loss if not managed correctly. With all this information given. How do I prevent bone loss? How soon can I have bone loss if I develop it? Btw. I just turned 31 on Aug. 14th, "11. And I weigh 195 pounds. And I'm 5'7". Okay. My last questions are about the BM's. It started on the very first day of starting my medicine. Why are they loose and completely green? Is this normal?