• Older age, especially 60 years or over
  • Family history of breast cancer
  • First menstrual period (menarche) before age 12
  • Menopause at age 55 or over
  • First childbirth after age 35
  • No children
  • Tall height (5’8” or taller)
  • Dense breasts
  • History of benign breast disease (like atypical hyperplasia