Rheumatoid arthritis

Hormone therapy in menopause increases rheumatoid arthritis risk: A systematic review and meta-analysis

Semin Arthritis RheumPublished Systematic review and meta-analysis of observational studies

Pooled result · RA risk, overallResult — go to the resultRate Ratio 1.15 95% CI 1.10–1.21

Authors' conclusion

Current menopausal hormone therapy use is associated with a modestly higher incidence of rheumatoid arthritis.

Study context

Population
Postmenopausal women; observational studies from MEDLINE, Embase and the Cochrane Library up to October 20255 studies
Comparison
Menopausal hormone therapy use vs no use
Outcome
RA incidence
Methodological detailsPRISMA, random-effects models, subgroup analyses (current vs former use, therapy duration)
  • PRISMA
  • Random-effects models
  • Subgroup analyses (current vs former use, therapy duration)

Pooled result

RA risk, overall

Rate Ratio

1.15

95% CI 1.10–1.21

P < 0.001

Menopausal hormone therapy usevs no use
Rate Ratio 1.15 (95% CI 1.10–1.21); P < 0.001

As reported in the abstract

Further pooled results

Rheumatoid Arthritis (RA) risk by current vs former use (subgroups)

Rate Ratio (95% CI)P value
Current users1.18 (1.00–1.37)P = 0.04
Former users1.11 (0.94–1.32)P = 0.20

RA risk with long-term use (≥4 years) (subgroup)

Rate Ratio (95% CI)P value
Long-term use (≥4 years)1.19 (1.07–1.33)P = 0.002

Original publication

Hormone therapy in menopause increases rheumatoid arthritis risk: A systematic review and meta-analysis. Semin Arthritis Rheum. Published 22 January 2026. doi:10.1016/j.semarthrit.2026.152935

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