Prevention & lipidsCohort study

Hormone Replacement Therapy and Cardiovascular Outcomes by Race and Ethnicity

JACC AdvPublished

  • prospective epidemiologic study

Authors' conclusion

We found relative benefit with early initiation of HRT in all race/ethnic groups except Chinese, adding to the complex literature on HRT use in CVD primary prevention. However, Chinese women with the metabolic syndrome or elevated triglycerides may have increased risk of adverse cardiovascular outcomes with HRT, suggesting further research is needed on racial and metabolic differences in the cardiovascular impact of HRT use.

Study context

Population
Postmenopausal women without cardiovascular disease (CVD) at enrollment in the Multi-Ethnic Study of Atherosclerosis (White, Black, Hispanic, and Chinese)postmenopausal women with data on hormone replacement therapy (HRT) and outcomes, followed up for a median of 14 years
Participants
2,427 women
Exposure
timing of HRT initiation and differences by race/ethnicity

Main finding

MACE · median of 14 years

Hazard ratio

0.72

95% CI 0.55–0.96

HRT use within 5 years of menopause
HR 0.72 (95% CI 0.55–0.96)

As reported in the abstract

Observational data: associations, not effects.

Further findings

All-cause mortality · median of 14 years

ComparisonHR (95% CI)
HRT use within 5 years of menopause · decreased all-cause mortality0.62 (0.48–0.80)

MACE and mortality in Chinese participants (subgroup)

ComparisonHR (95% CI)
Chinese participants on HRT · increased MACE2.27 (1.06–4.87)
Chinese participants on HRT · trend towards increased mortality1.34 (0.73–2.47)

MACE and mortality in Chinese participants (subgroup)

These findings were only seen in Chinese participants who had the metabolic syndrome or elevated triglyceride levels

Original publication

Hormone Replacement Therapy and Cardiovascular Outcomes by Race and Ethnicity. JACC Adv. Published 23 January 2026. doi:10.1016/j.jacadv.2025.102561

Summarised from the published abstract; every number is checked against it