Probiotic studies suggest sleep and mood improvements in women with PCOS
A small review reported better questionnaire scores for sleep and depressive symptoms, but evidence was limited and the abstract did not report anxiety results.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
The review reported improvements in sleep quality and depressive symptoms among women with polycystic ovary syndrome receiving probiotic interventions compared with placebo. Some quality-of-life domains also improved. These findings concern questionnaire scores in this specific population; the limited and varied studies do not establish a dependable treatment effect for all women with PCOS.
Few studies, modest samples and differing methods limit confidence. The abstract gives no effect sizes or treatment durations, and this abstract-based summary cannot establish whether reported score changes were large enough to matter to participants.
What the review tested
Trials included probiotic or synbiotic supplements and enriched foods, with placebo comparisons. The abstract does not provide preparation or schedule details that would link the reported improvements to a particular product.
Which outcomes remain open
Anxiety was part of the review's question, but the abstract does not report an anxiety result. Better depressive-symptom scores also do not establish that participants were less likely to develop a depressive disorder.
The original publication
Effects of Probiotic Supplementation on Mental Health and the Risk of Depression in Women with Polycystic Ovary Syndrome: A Systematic Review of Randomized Controlled Trials.
Łagowska K, Ptaszyńska D
Nutrients · 2026
- PubMed ID
- 41599922
- Record checked
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