ArticleScientific reports2024
The vaginal microbiome of transgender men receiving gender-affirming hormonal therapy in comparison to that of cisgender women.
Article in Scientific reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Why probiotics fail: gut niche tension as the missing variable?Gut microbes · 2026Review
- Special Issue: New Horizons in HIV and Reproductive Health Research: HIV Acquisition and Reproductive Health in Key Populations.American journal of reproductive immunology (New York, N.Y. : 1989) · 2026Review
- The Biosocial Microbiome: Gender Identity, Geography, and Mucosal Microbial Phenotypes.Research square · 2026Article
- The Impact of Testosterone Therapy on the Vaginal Microbiota of Transgender Men and Nonbinary People: A Prospective Study.The Journal of infectious diseases · 2025Article
- Exploring the vaginal ecosystem: insights into host-microbe interactions and microbial community dynamics.Infection and immunity · 2025Review
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The vaginal microbiome of trans men and menopausal women is suspected to be similar due to a lack of estrogen leading to the absence of lactobacilli. However, data are scarce. We performed an analysis of the vaginal microbiome of trans men (n = 25) in comparison to that of menopausal (n = 25) and premenopausal women (n = 25). The vaginal microbiome of trans men and menopausal women showed a higher alpha diversity than that of premenopausal women. Various beta diversity indices (e.g., Bray‒Curtis (Un-)Weigthed Unifrac), showed significant differences in community composition between trans men and premenopausal (p < 0.001) and menopausal women (p < 0.001). The vaginal microbiome of trans men is characterized by a loss of Lactobacillus and an increase in bacteria associated with the intestinal flora (e.g., Campylobacter, Anaerococcus, Dialister, Prevotella). The abundance of Dialister and Prevotella decreased with the length of hormonal therapy in trans men. The Nugent score, Pap smear and HPV status did not differ between the study groups. The vaginal microbiome of trans men differs from that of premenopausal women but shows similarities to that of menopausal women. The duration of hormonal therapy in trans men may have important impacts on the vaginal microbiome and thus possibly on the risk for STIs.
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