Breast Cancer Risk Factors

Click on the links below to get detailed information on each risk factor.

Cancer History Risk Factors

• Family history of breast cancer
• Cancer of the other breast

Hormonal Risk Factors

• Starting periods before the age of 11 years
• Later pregnancy
• Later menopause
• The oral contraceptive pill
• Hormone replacement therapy (HRT)

Lifestyle Risk Factors

• Obesity
• Diet
• Alcohol consumption
• Smoking

Other Risk Factors

• The environment
• Previous benign breast biopsy
• Mammographic density