Semaglutide's Effects on Mental Health: Systematic Review of Benefits and Risks | Research

The takeaway

Systematic review examines semaglutide's psychiatric effects, finding potential neuroprotective benefits alongside reports of mood changes and psychopathological symptoms.

Benefits + risks identified
Semaglutide shows neuroprotective potential but may cause mood changes in some patients

What the researchers found

Semaglutide demonstrates potential neuroprotective effects but may influence psychological functioning, with reports of psychopathological symptoms including mood changes in some patients.

Why it matters

Tens of millions take semaglutide. Understanding its psychiatric profile helps clinicians monitor patients and manage expectations about mental health effects.

How the study worked

Systematic review searching PubMed and Google Scholar for studies on semaglutide's effects on mental health and neuropsychiatric outcomes.

What this study cannot tell us

Systematic review quality depends on available primary studies. Distinguishing drug effects from weight loss-related mood changes is difficult.

How to read the evidence

Systematic review — comprehensive evidence synthesis but limited by heterogeneous primary studies.

When this study was published

Published in 2026; addresses an increasingly discussed topic.

The bigger picture

As GLP-1 drugs affect brain reward and mood circuits, their psychiatric profile is becoming as important as their metabolic effects for clinical decision-making.

Questions still open

Do semaglutide's psychiatric effects differ between obesity and diabetes doses?
Should psychiatric screening become standard before GLP-1 drug initiation?

Common questions

Can semaglutide affect my mood?

Some patients report mood changes on semaglutide. This review found both potential neuroprotective benefits and reports of psychological symptoms. If you notice mood changes, discuss them with your doctor.

Does semaglutide protect the brain?

Emerging evidence suggests semaglutide may have neuroprotective effects through anti-inflammatory and metabolic pathways. However, it may also affect psychological functioning in some patients.

Read the original research

Glucagon-like peptide-1 receptor agonist semaglutide through the lens of psychiatry: a systematic review of potential benefits and risks.

International clinical psychopharmacology, 41(2), 77-95

View on PubMed ↗Publisher’s paper ↗

Citation

Carminati, Matteo; Tondello, Mattia; Concina, Arianna; Olgiati, Paolo; Zanardi, Raffaella. (2026). Glucagon-like peptide-1 receptor agonist semaglutide through the lens of psychiatry: a systematic review of potential benefits and risks.. International clinical psychopharmacology, 41(2), 77-95. https://doi.org/10.1097/YIC.0000000000000595