SynthesisFrontiers in endocrinology2026
The impact of estrogen status on the gut microbiome: a systematic review and meta-analysis.
Synthesis in Frontiers in endocrinology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
2 citing papers in PubMed.
- Estrogen receptors and the NRF2 pathway: bridging hormonal regulation and stress response in the gut.Frontiers in endocrinology · 2026Review
- Menopause-associated gut microbiome remodeling and pharmacomicrobiomics: emerging mechanisms influencing drug response.Frontiers in microbiomes · 2026Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
13 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: Estrogens have been proposed as modulators of gut microbiome (GM) composition, yet evidence from observational studies remains inconsistent. Objective: This meta-analysis aimed to systematically summarise existing evidence on GM alterations in hypoestrogenic women - post-menopausal or premature ovarian insufficiency (POI) - compared to euestrogenic pre-menopausal controls. Methods: PubMed, SCOPUS and Embase were searched through December 2024 for studies comparing GM characteristics between hypoestrogenic and pre-menopausal women. Primary outcome was α-diversity (Shannon index). Secondary outcomes included relative abundances of Results: Out of 1092 studies screened, 7 met the inclusion criteria (n = 45 women with POI, n = 1222 post-menopausal women, n = 463 eustrogenic controls). No significant differences were observed in Conclusion: Current evidence does not support consistent differences in GM diversity or major bacterial phyla between hypoestrogenic and euestrogenic women. Given the substantial heterogeneity, limited control of confounding factors, and variability in methodological quality, these findings should be interpreted with caution. High-quality, well-controlled studies are needed to better define the relationship between estrogen status and the GM.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.