Home > Cancer > Breast Cancer Risk Factors Get the Flash Player to see this player. Rate: (Click the stars to rate) Published on Dec 27, 2007 by MBaker, Views: 5646 Risk factors for breast cancer include age, BRCA gene mutations- BRCA1 and BRCA2, previous abnormal biopsy, starting menstrual cycle before age 12, or menopause after age 55, first child after age 30 or no children at all. Smoking, alcohol use and hormone replacement are also related. I was diagnosed with breast cancer and have treatment for my cancer now. I am trying to learn as much as possible about breast cancer. NJ1444 9.1 years ago