Risk factors for Breast Cancer

  • Demographics:
    • Advanced age
    • Overweight or obesity (particularly in postmenopausal women)
    • White race or Ashkenazi Jewish descent
  • Medical history:
    • BRCA1 or BRCA2 mutation
    • First-degree relative with breast or ovarian cancer
    • History of atypical hyperplasia or lobular carcinoma in situ
    • One prior breast biopsy (regardless of results)
    • Personal history of breast or ovarian cancer
  • Medications and diet:
    • Alcohol consumption (more than one drink per day)
    • Current or prior use of hormone therapy or oral contraceptives
  • Reproductive history: o Menarche before 12 years of age o Menopause after 55 years of age o Nulliparity or age older than 35 years at first delivery • Other: o High breast density on mammography o Prior thoracic radiation exposure

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