I just had my visit with my breast oncologist at Memorial Sloan Kettering Cancer Center, NY.
I am on anastrozole 1 mg./daily to prevent a reoccurrence of cancer. Bilateral mastectomy in May 2025. Stages 1 and IIa. Early. She recommended calcium 1200-1500 mg. per day and Vitamin D 2000 IU per day. I have heart disease also and she said - do not take K2. Potential blood clotting issues and re: the magnesium she said "if you want to take it go ahead" but did not endorse it. Only calcium and vitamin D3. In 2023 my bone density scan was normal - age 68. Now after 3 months on the breast cancer medication & at age 70, my bone density showed osteopenia in my left hip. Spine and right hip was normal. She referred me to an endocrinologist for evaluation. I don't know what, if any, the endocrinologist will suggest.
Yes, weight bearing exercises, walking, stair climbing, squats, diet, no alcohol, no smoking - all excellent to ward off osteoporosis. It is scary to take this cancer medication but I am between a rock and a hard place. Nothing is easy.