Risk Factors for Breast Cancer
- Prior personal history of breast cancer, or other abnormalities in the breast tissue
- Breasts that have a high proportion of lobular and ductal tissue instead of fatty tissue (that is, dense breasts)
- Previous breast exposure to radiation therapy before age 30
- Pregnancy after age 30, or no pregnancy at all
- Overweight, particularly after menopause
Increased exposure to estrogen, which includes:
- First menstrual period before age 13
- Menopause after age 51
- Prolonged use of hormone replacement therapy
- Previous biopsy results that indicate atypical hyperplasia or radial scar formation
- Drinking three or more alcoholic drinks daily
- Having a sedentary lifestyle
Breast cancer. National Cancer Institute website. Available at: http://www.cancer.gov . Accessed January 27, 2006.
Breast cancer. Womens' Health.gov website. Available at: http://www.womenshealth.gov/ . Accessed January 27, 2006.
National Breast and Cervical Cancer Early Detection Program. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/cancer/nbccedp/ . Accessed January 31, 2006.
- Reviewer: Mohei Abouzied, MD
- Review Date: 09/2012 -
- Update Date: 09/11/2012 -