Risk Factors You Can Not Control

Getting older—the older you get, the greater your risk of breast cancer
A personal history of breast or ovarian cancer
Having a mother, daughter or sister who has had breast cancer
Having a previous biopsy showing atypical hyperplasia or carcinoma in situ
Being young (<12 years) at the time of your first period
Starting menopause after age 55
Having an inherited mutation in the BRCA1 or BRCA2 breast cancer genes