HRT and cancer risk data
Absolute breast cancer risk on combined HRT is under 1 extra case per 1000 women per year of use.
What WHI showed
Combined estrogen and progestin increased breast cancer risk after 5 years.
What newer data shows
Estradiol plus micronized progesterone shows lower risk than the older MPA regimen.
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Related: FDA peptide review July 2026 briefing · Peptide therapy hub · Longevity service
Written and medically reviewed by the Kindr Health Clinical Team · Published 2026-06-19 · Last reviewed 2026-07-01. Compounded medications are prepared by FDA-registered 503A pharmacies and are not FDA-approved drug products.