“Studies have shown risk for breast cancer is due to a combination of factors. The main factors that influence your risk include being a woman and getting older. Most breast cancers are found in women who are 50 years old or older. The risk factors you cannot change are Getting older, Genetic Mutations, Reproductive history, Having dense breasts, Personal history of breast cancer or certain non-cancerous breast diseases, family history of breast or ovarian cancer, Previous treatment using radiation therapy, and Women who took the drug diethylstilbestrol (DES).”
Center of Disease Prevention and Control (CDC)