I was diagnoised about 9 years ago with breast cancer in my left breast. I did high dose radiation for 5 straight days no chemo required. Had a lumpectomy on the left breast. Went on Letrozole for 5 years. In year 7, I discovered a lump in my right breast. It was too large to have a lumpectomy so I opted to have a Mastectomy. I am now on Anastrozole. I could not tolerate the body aches and pains with Letrozole. Dr. is recommending 10 years on the medication this time. I already have been diagnoised with bone loss, ostopenia. Not sure what to do. I hear that Tamoxifen does not have the side effects with bone loss and body aches. If so, why aren't more doctors recomending that instead of the AI. Anysuggestions would be helpful. I have read so much that I don't know what to do.