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Updated: Aug 8, 2026

An In Vivo Estrogen Deficiency Mouse Model for Screening Exogenous Estrogen Treatments of Cardiovascular Dysfunction After Menopause
Published on: August 13, 2019
Postmenopausal hormone therapy and cardiovascular disease: an overview of main findings
Marianne Canonico1, Céline Straczek, Emmanuel Oger
1INSERM-Unit U780, Cardiovascular Section 16, Avenue Paul Vaillant-Couturier, 94807 Villejuif Cedex, France.
Insights
Hormone therapy, including estrogen, does not prevent cardiovascular disease in women and may increase stroke risk. Transdermal estrogen appears safer for venous thromboembolism, but more research is needed.
Area of Science:
- Cardiology
- Endocrinology
- Women's Health
Background:
- Cardiovascular disease (CVD) is a major cause of death in women.
- Hormone therapy (HT) has been investigated for potential CVD benefits.
- Estrogen's cardioprotective effects remain controversial.
Purpose of the Study:
- To summarize divergent findings on HT and CVD in women.
- To explore reasons for discrepancies between observational and clinical trials.
- To provide guidance on HT use for CVD prevention.
Main Methods:
- Review of observational studies and randomized clinical trials.
- Analysis of data regarding estrogen alone and estrogen with progestins.
- Evaluation of different estrogen administration routes (oral vs. transdermal).
Main Results:
- Large trials did not confirm estrogen's cardioprotective effect.
- Estrogen therapy may increase stroke and venous thromboembolism (VTE) risk.
- Transdermal estrogen shows improved VTE safety compared to oral estrogen.
Conclusions:
- Hormone therapy is not indicated for cardiovascular disease prevention in women.
- Transdermal estrogen may be a safer option regarding VTE.
- Further research is crucial for personalized HT benefit-risk assessment.
Abstract:
Cardiovascular disease has emerged as a leading cause of death in women. In recent years, significant attention has been paid to the potential benefits of hormone therapy on chronic diseases such as cardiovascular disease. Large prevention trials failed to confirm the cardioprotective effect of estrogen. The divergent findings from observational and randomized clinical studies are summarized and reasons for the different results are postulated. Use of estrogen alone or estrogen opposed with progestins is not indicated for the prevention of cardiovascular disease and may even increase the risk of stroke. Oral estrogen increases venous thromboembolism events. Recent data suggest that transdermal estrogens are safe with respect to venous thromboembolism. Current data have limited ability to investigate the wide variety of hormone treatments available. Clinical research should be continued to assist patients and clinicians in making treatment decisions on the basis of an individual's benefits and risks.
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