Research

Hormonal

The mortality benefit of postmenopausal hormone therapy is attenuated with long-term use (10+ years) due to an increased risk of breast cancer mortality.

If you have been using hormone therapy for 10 or more years, the overall mortality benefit may be reduced due to an increased risk of breast cancer. This does not mean the therapy is harmful, but the net benefit is smaller than for short-term users. Discuss the balance of cardiovascular and breast cancer risks with your doctor.

GoodQualifiesHIGH confidence
the apparent benefit decreased with long-term use (relative risk, 0.80; 0.67 to 0.96, after 10 or more years) because of an increase in mortality from breast cancer among long-term hormone users.
Francine Grodstein et al. · New England Journal of Medicine · 1997

Why this rating

Same high-quality observational study design.

Source

Postmenopausal Hormone Therapy and Mortality

Francine Grodstein et al. · New England Journal of Medicine · 1997

DOI 10.1056/nejm199706193362501

cohort · n=39734Cited 1,190×
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DOI resolved against Crossref · corpus check 2026-06-10

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