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[0] What are the risks and side effects? This choice by itself won't prevent cancer. You could still have breast cancer that is not found early. Sometimes tests can be wrong, saying that you have a problem when you don't. That can lead to even more testing and a lot of worry.
Medicine does not work as well as surgery to prevent cancer. Aromatase inhibitors may cause osteoporosis and problems with memory, talking, and learning. Taking tamoxifen may increase the risk of endometrial cancer. Both tamoxifen and raloxifene increase the risk for blood clots in veins and in the lungs.
Breast Cancer: What Should I Do if I'm at High Risk? | UW Health | Madison, WI