6 juli 2025: Bron: Journal of Psychiatric Research Volume 188, August 2025, Pages 104-116

Wanneer mensen met een depressie probiotica of prebiotica of synbiotica nemen dan verminderen bij deze patiënten depressieve symptomen en angst in vergelijking met het niet gebruiken van deze middelen. Dat blijkt uit een meta-analyse van 19 studies. 

CONCLUSIE:

  • Vergeleken met de controlegroep vertoonden deelnemers die probiotica of prebiotica of synbiotica kregen een significant grotere afname in depressiescores (gestandaardiseerd gemiddeld verschil , -1,8; 95%-BI, -2,4 tot -1,1) en angstscores (SMD, -1,6; 95%-BI, -2,8 tot -0,4).
  • Subgroepanalyses wezen op significante verschillen tussen groepen voor depressiescores op basis van nationaliteit, interventieduur, ernst van de ziekte en BMI, en voor angstscores op basis van nationaliteit, leeftijd, beoordelingsinstrument en aantal stammen.
  • Zes van de 19 studies toonden echter enige bezorgdheid over het risico op bias.

Het volledige studierapport is onder bepaalde voorwaarden gratis in te zien of te downloaden, klik daarvoor op de titel van het abstract:

Journal of Psychiatric Research

Volume 188, August 2025, Pages 104-116
Journal of Psychiatric Research

The impact of probiotics, prebiotics, and synbiotics on depression and anxiety symptoms of patients with depression: A systematic review and meta-analysis

https://doi.org/10.1016/j.jpsychires.2025.05.053Get rights and content

Abstract

Introduction

Depression is a prevalent mental health disorder with significant societal impact and treatment challenges. Recent research on the gut-brain axis has led to interest in probiotics, synbiotics, and prebiotics as potential therapeutic options for depression. This systematic review aims to evaluate their effects and provide evidence-based insights for future research and clinical practice.

Methods

Six digital databases (Scopus, PubMed, Web of Science, Cochrane, PsycINFO, and CINAHL complete) were examined for English-language records. Inclusion criteria involved studies assessing the impact of probiotics, prebiotics, and synbiotic on depression and anxiety in individuals with depression. The Cochrane Collaboration's instrument was employed to evaluate the risk of bias. For meta-analysis, random-effects model was favored, and statistical analysis was conducted using Stata software version 17.

Results

From initial 4407 studies 19 studies included in meta-analysis. A meta-analysis of 19 studies involving 1405 participants (882 cases and 523 controls) revealed a significant decrease in depression scores among patients receiving probiotics, prebiotics, or synbiotics compared to the control group (SMD: −1.76 [-2.42, −1.10]), despite high heterogeneity between studies (I2: 96.29 %). Similarly, analysis of seven studies with 481 participants (237 cases and 244 controls) showed a significant decrease in anxiety scores for those receiving these supplements (SMD: −1.60 [-2.83, −0.36]), with high heterogeneity between studies (I2: 96.90 %).

Conclusion

In conclusion, our meta-analysis indicates that probiotics, prebiotics, or synbiotics significantly reduce depression and anxiety symptoms in patients with depression. Future research should address heterogeneity in diagnosis and intervention types to better understand their efficacy.

CRediT authorship contribution statement

Reza Moshfeghinia: Writing – review & editing, Writing – original draft, Visualization, Validation, Methodology, Formal analysis. Hossein Nemati: Writing – original draft, Visualization, Validation, Conceptualization. Asal Ebrahimi: Writing – original draft, Project administration, Methodology. Dorsa Shekouh: Writing – original draft, Validation, Methodology, Investigation. Saeed Karami: Writing – original draft, Methodology, Data curation. Mohammad Mirahmadi Eraghi: Validation, Supervision. 

Ethics approval

Not applicable.

Consent for publication

Not applicable.

Availability of data

All necessary details are provided in the text and additional materials; further supplemental data can be acquired by emailing the corresponding author.

Funding

Not applicable.

Declaration of Competing interest

There are no conflicts of interest to be disclosed by the authors.

Acknowledgements

The authors thank ChatGPT 3.5 for helping improve our drafts and English. We carefully checked content and avoided plagiarism.

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