The strongest risk factor is age. Although breast cancer can occur at any age, risk goes up as a woman gets older. Most women who develop breast cancer are older than 50.
Women who have had breast cancer in one breast are more likely to get it in the other breast.
Having a mother, sister, or daughter who has had breast cancer increases a woman’s risk.
Using menopausal hormonal therapy containing both oestrogen and progestin for more than 5 years.
You have higher risk if YOU got your first menstrual period before age 12, reached menopause after age 55 or never had children or had children after age 30.
References: 1. South African National Cancer Registry. Cancer in South Africa 2012 Johannesburg. www.ncr.ac.za. Accessed October 2020. 2. Office on Women’s Health, U.S. Department of Health and Human Services, womenshealth.gov. Breast Cancer. Breast Cancer Symptoms. Available at: http://www.womenshealth.gov/breast-cancer/breast-cancer-symptoms/index Last accessed April 2017. 3. Office on Women’s Health, U.S. Department of Health and Human Services, womenshealth.gov. Breast Cancer. Breast Cancer Risk Factors and Prevention. Available at: http://www.womenshealth.gov/breast-cancer/risk-factorsprevention/ index Last accessed April 2017.