What Affects A Woman's Breast Cancer Risk?

What are the factors that can raise a woman's risk of developing breast cancer during her lifetime?
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What Affects A Woman's Breast Cancer Risk?

Genetic counselor Stacey Miller and Dr. Debra Koivunen of the Ellis Fischel Cancer Center discuss the factors that affect a women's risk of developing breast cancer. (Videos via Centers for Disease Control and PreventionMayo Clinic and CBS)

This video includes images from the National Institutes of HealthSarah C / CC BY ND 2.0 and Getty Images.