Wondering about bone density effects and AIs...am about to start Arimidex after a local recurrence of BC (and mastectomy), but just got bone density scan results and shows almost 7% decrease in spine since 2.5 yrs ago. Somewhere I saw a mention that with AIs, there can be about a 2% decrease per year, so if this is correct, I am going to be in bad shape, if I already decrease about 3% per year without AIs (spine now at -3, was -2.5). The surgeon prescribed Fosamax but I am wary of meds. I am on the verge of 71 yrs. Any advice or similar predicament?