Your risk for breast cancer continues to increase over your lifetime. Several known factors can further increase your risk for breast cancer. Most women who get breast cancer have no known risk factors such as a family history of the disease. Talk to your doctor about the known risk factors. Personal history of prior breast cancer Evidence of a specific genetic change that increases susceptibility to breast cancer.
Additional factors can play a role in a woman's risk for breast cancer.
A slight increase in risk for breast cancer is associated with having a first birth at age 30 or older.