The use of certain medicines and other factors decrease the risk of breast cancer. Anything that decreases your chance of getting a disease is called a protective factor. Protective factors for breast cancer include the following: - Taking any of the following: - Estrogen-only hormone therapy after a hysterectomy. - Selective estrogen receptor modulators (SERMs). - Aromatase inhibitors. - Less exposure of breast tissue to estrogen made by the body. This can be a result of: - Early pregnancy. - Breastfeeding. - Getting enough exercise. - Having any of the following procedures: - Mastectomy to reduce the risk of cancer. - Oophorectomy to reduce the risk of cancer. - Ovarian ablation. 
How to prevent Breast Cancer ?