Risk Factors of Breast Cancer

Risk factors for Breast Cancer

  • Gender: Breast cancer is 100 times more common among women than men. This is because women possess more of the hormones – oestrogen and progesterone, which are linked with the development of cancer cells.
  • Genetic Factors: An estimated 5-10% of breast cancer cases are considered hereditary or mutations that have been passed on from parent to child. Defects in BRC1 and BRC2 genes are the most common cause for hereditary breast cancer. These genes help prevent cells from mutating or growing abnormally.
  • Increased or Irregular Menstrual Cycles: Women who have had more menstrual cycles due to starting at an early age (before age 12) or go through menopause at a later age (over age 55) are at an increased risk.
  • Additional Risks: In addition to the above, Breast Cancer incidence is likely to be higher due to the following factors
    • Increasing age
    • Family history
    • Personal history with breast cancer
    • Dense breast tissue
    • Previous chest radiation exposure
    • Benign breast conditions
    • Late pregnancies, first child post 30
    • Oral contraceptive use
    • Increased alcohol consumption
    • Obesity
    • Sedentary lifestyle