The following are some risks factors that have been associated with breast cancer in the past. A risk does not mean that you will get cancer and having no risks does not mean that you will not get cancer.

• history ( a family or personal history of having breast cancer will increase your risk)
• age ( the older that you are the better the chance of developing breast cancer)
• Genes( specifically BRCA1 and BRCA2 shows an increased risk)
• if you have began your period before age 12
• if you have given birth after age 35
• consuming alcohol
• obesity
• hormone therapy after menopause

Overall, some breast cancer thrives from the female hormone estrogen . Starting an early period, having a late baby, and hormone therapy are all ways the raise these levels in your body .

Referenced

Mayo Clinic Staff. (2014, November 20). Breast cancer. Retrieved September 8, 2015, from http://www.mayoclinic.org/diseases-conditions/breast-cancer/basics/risk-factors/con-20029275