# Semaglutide Psychiatric Risk Meta-Analysis: Trials Pooled With Report Counts A semaglutide meta-analysis gave pooled risk ratios of 1.25 for depression, 1.22 for anxiety and 1.20 for suicidal ideation, all non-significant, with heterogeneity of 98%, 99% and 92%. Publisher: This GLP Editorial Team Canonical: https://thisglp.com/research/semaglutide-psychiatric-risk-pooling Updated: 2026-09-18 Published: 2026-09-16 [← Research](https://thisglp.com/research) Safety # Semaglutide Psychiatric Risk Meta-Analysis: Trials Pooled With Report Counts A meta-analysis found no significant psychiatric risk with semaglutide. It reached that by pooling randomized trials with tallies from a spontaneous reporting database. [This GLP Editorial Team](https://thisglp.com/about)September 20267 min readUpdated September 2026 Pooled risk ratio, and how much the studies disagreed · 1.0 · depression · I² 98% · anxiety · I² 99% · suicidal ideation or attempt · I² 92% · Randomized trials and report tallies, averaged together. **Research, not medical advice.** This GLP is independent and educational. Nothing here is a substitute for individualized care from a licensed clinician, and reading it creates no doctor–patient relationship. Talk to your own provider before starting, stopping, or changing any medication, peptide, or therapy. See our [methodology](https://thisglp.com/methodology) and [terms](https://thisglp.com/terms). ## Key takeaways - A meta-analysis of semaglutide and psychiatric outcomes, searched to January 2026. - Depression: pooled risk ratio 1.25, 95% CI 0.95 to 1.65. Anxiety: 1.22, 0.93 to 1.60. Suicidal ideation or attempt: 1.20, 0.90 to 1.62. - None is statistically significant. All three point estimates sit above 1. - Heterogeneity was 98%, 99% and 92% — the studies barely agree at all. - Randomized trials were pooled together with spontaneous-reporting analyses. Three reassuring-looking nulls, and a methods section that explains why the word “pooled” is doing more work here than usual — the same distinction between [what different designs can be asked](https://thisglp.com/research/do-glp1-drugs-cause-gout) that decides how much any average is worth. ## What went into the pool The eligible studies were randomized controlled trials, observational studies, large database analyses and pharmacovigilance disproportionality studies. [\[1\]](https://thisglp.com/research/semaglutide-psychiatric-risk-pooling#ref-1) All four were combined into single risk ratios. Those are not the same measurement. A randomized trial compares what happened to two groups assigned by chance. A disproportionality analysis divides one kind of report by other reports inside a spontaneous database, with no count of how many people took anything. The first estimates a risk; the second estimates how a database looks, which is why [the cohort evidence on this question](https://thisglp.com/research/glp1-and-suicidal-ideation) is worth separating from the report counts rather than averaged with them. Which is why the heterogeneity is what it is I² of 98%, 99% and 92% means the included studies are not producing scattered estimates of one underlying number — they are producing different numbers, near-completely. Some of that is populations and follow-up. A large part of it is that the inputs are answers to different questions. A random-effects model will still return an average, and the average of a risk ratio and a reporting ratio is neither. ## What the numbers say Depression 1.25, 95% CI 0.95 to 1.65. Anxiety 1.22, 95% CI 0.93 to 1.60. Suicidal ideation or attempt 1.20, 95% CI 0.90 to 1.62. Every interval crosses 1, so none is significant. All three point estimates sit above 1, which is worth saying plainly and worth not over-reading. It is not evidence of harm. It is also not the same picture as three estimates landing on either side of 1, and with intervals this wide the data cannot distinguish between the two. ## The sentence the authors close on They describe their own findings as reassuring, and then write that they should be interpreted as the absence of a detected increased risk in the available evidence rather than definitive proof of no psychiatric risk. That is a precise and unusually honest closing line, and it is the whole of [why not finding something is not finding nothing](https://thisglp.com/research/does-a-glp1-affect-surgery-outcomes) written by the people who did the work. ## What to carry away That regulators on both sides of the Atlantic have looked at this question and not confirmed a causal link, and that this analysis does not contradict them. And that when a meta-analysis reports heterogeneity in the nineties, the first thing to check is what it pooled. An average of incompatible designs is a summary of a literature, not a measurement of a risk — the same caution that applies to [any pooled figure no individual study reported](https://thisglp.com/research/glp1-weight-loss-pooled-average). Anyone experiencing thoughts of harming themselves should speak to a doctor now, not weigh an interval. ## Frequently asked Does semaglutide increase depression risk? This analysis found a pooled risk ratio of 1.25, 95% CI 0.95 to 1.65 — not statistically significant. The authors call it the absence of a detected increase rather than proof of no risk. Why is the heterogeneity so high? Partly populations and follow-up, and partly because randomized trials were pooled with spontaneous-reporting analyses, which measure a different thing entirely. What about anxiety and suicidal ideation? Pooled risk ratios of 1.22, 95% CI 0.93 to 1.60, and 1.20, 95% CI 0.90 to 1.62. Neither is significant, and both intervals are wide. Should this change anything? It does not contradict what regulators have concluded. Anyone having thoughts of self-harm should speak to a doctor rather than weigh a confidence interval. ## Sources 1. \[1\] Bhaduri G, et al. (2026). Burden and Risk of Depression in Patients Receiving Semaglutide: A Systematic Review and Meta-Analysis Clinical Obesity. 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