Risk FactorsResearch has found several risk factors that may increase your chances of getting breast cancer.
Reproductive Risk Factors
- Being younger when you first had your menstrual period.
- Starting menopause at a later age.
- Being older at the birth of your first child.
- Never giving birth.
- Not breastfeeding.
- Long-term use of hormone-replacement therapy.
Other Risk Factors
- Getting older.
- Personal history of breast cancer or some non-cancerous breast diseases.
- Family history of breast cancer (mother, sister, daughter).
- Treatment with radiation therapy to the breast/chest.
- Being overweight (increases risk for breast cancer after menopause).
- Having changes in the breast cancer-related genes BRCA1 or BRCA2.
- Drinking alcohol (more than one drink a day).
- Not getting regular exercise.