Many factors over the course of a lifetime can influence your breast cancer risk. You can’t change some factors, such as getting older or your family history, but you can help lower your risk of breast cancer by taking care of your health in the following ways— Keep a healthy weight. Exercise regularly. Don’t drink alcohol, or limit alcoholic drinks to no more than one per day. If you are taking, or have been told to take, hormone replacement therapy external icon or oral contraceptives external icon (birth control pills), ask your doctor about the risks and find out if it is right for you. Breastfeed your children, if possible. If you have a family history of breast cancer or inherited changes in your BRCA1 and BRCA2 genes, talk to your doctor about other ways to lower your risk.