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Updated: Aug 12, 2025

Establishment of Rat Models Mimicking Gender-affirming Hormone Therapies
Published on: January 10, 2025
Medical transition for gender diverse patients.
Chelsea N Fortin1, Molly B Moravek1
1Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, University of Michigan, Ann Arbor, Michigan.
Gender-affirming hormone therapy offers positive effects for transgender individuals, with generally low risks. Long-term monitoring is crucial for metabolic, cardiovascular, and skeletal health.
Area of Science:
- Endocrinology
- Transgender Health
- Medical Research
Background:
- Gender-affirming hormone therapy (GAHT) is a critical component of care for many transgender and gender diverse individuals.
- Understanding the efficacy, risks, and long-term implications of GAHT is essential for providing optimal patient care.
Purpose of the Study:
- To offer a comprehensive review of current gender-affirming hormone therapy.
- To detail available hormone regimens, their effectiveness, and potential risks.
- To outline surveillance and long-term care considerations for patients undergoing GAHT.
Main Methods:
- This review synthesizes findings from recent cohort studies and existing literature.
- It examines data on the physical and psychological effects of hormone therapy.
- The review also considers the limitations of current research, particularly the lack of randomized controlled trials.
Main Results:
- Recent evidence indicates that GAHT yields positive physical and psychological outcomes for many transgender individuals.
- The overall risks associated with GAHT are considered low.
- While some studies suggest potential increased risks of venous thromboembolism and breast cancer in transgender women, these require further confirmation.
Conclusions:
- Current evidence suggests that gender-affirming hormone therapy is generally safe and effective when administered with appropriate medical supervision.
- Long-term health considerations, including metabolic, cardiovascular, and skeletal well-being, necessitate ongoing monitoring.
- Further high-quality, long-term research is needed to fully elucidate the safety and effectiveness profiles of various GAHT regimens.
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