SynthesisBMC urology2025
Effect of GLP-1 agonists on testosterone levels: a systematic review and meta-analysis.
Synthesis in BMC urology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 2 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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
4 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Pooled it
- GLP-1 therapies and hair loss: A systematic review of current evidence and implications for counseling.Science progressPooled it
- Glucagon-like receptor-1 agonists and impotence: A meta-analysis.World journal of methodology · 2026Article
- GLP-1 Receptor Agonists and Tirzepatide in Men Seeking Fertility: A Structured Narrative Review and Proposed Clinical Framework.Journal of clinical medicine · 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
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionTestosterone plays a central role in endocrine and metabolic functions. Glucagon-like peptide-1 receptor agonists (GLP-1 RAs), widely prescribed for type 2 diabetes and obesity, have been proposed to modulate testosterone levels. Although this association is not yet covered by clinical guidelines, emerging studies suggest favorable effects, possibly due to weight loss and improved insulin sensitivity. This systematic review and meta-analysis aim to synthesize current evidence on how GLP-1 RAs influence testosterone levels and highlight areas for future investigation. MATERIALS AND
methodsA systematic search was conducted using Embase, PubMed, Scopus, Cochrane, and Google Scholar databases through December 2024. Eligible studies included RCTs, cohort studies, and retrospective analyses comparing testosterone levels before and after GLP-1 RA administration. Primary and secondary outcomes included total, free, and bioavailable testosterone, SHBG, and HbA1c. All included studies reported baseline hormone values and used validated measurement techniques. Data analysis was performed using RStudio.
resultsFour studies comprising 219 patients pre-treatment and 216 post-treatment were included. GLP-1 RA use was significantly associated with increased bioavailable testosterone (MD -57.18; 95% CI -87.60 to -26.76; p < 0.001; I
conclusionsGLP-1 RAs appear to elevate bioavailable testosterone and improve glycemic control, while effects on free testosterone and SHBG remain inconclusive. These findings suggest possible endocrine benefits of GLP-1 therapy; however, further well-powered studies are warranted.
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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.