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Hormone Therapy and Family History

Jun 27, 2025

Overview

Dr. Kelly Casperson emphasizes that a family history does not preclude individuals from using hormone therapy and shares findings from the WHI study regarding estrogen use and breast cancer risk.

Hormone Therapy Eligibility

  • No family history should automatically disqualify a patient from considering hormone therapy.
  • Hormone therapy decisions should be individualized and not based solely on familial breast cancer risk.

WHI Study Findings

  • The estrogen-only arm (conjugated equine estrogens, CEE) of the Women's Health Initiative (WHI) showed 20% less breast cancer incidence compared to the placebo group.
  • These findings suggest that estrogen-only hormone therapy may have a reduced breast cancer risk in certain populations.

Recommendations / Advice

  • Clinical decisions about hormone therapy should be discussed between patient and provider, considering personal and family medical history along with current evidence.