Probiotic Sleep Randomized Trial: What the Evidence Says

Quick Answer

Probiotic Sleep Randomized Trial has 2 source documents in the current Migaku evidence database. The strongest available sources in this first pass are systematic review, randomized trial, so conclusions should be framed as evidence-aware guidance rather than medical advice.

Key Takeaways

• This page is generated only from sources stored in the Migaku evidence knowledge base.
• Current evidence mix: 1 systematic review, 1 randomized trial.
• Claims should be interpreted with the source type, study design, population, and publication date in mind.
• This article is educational and does not replace care from a qualified clinician.

Evidence Map

What The Sources Report

• A 2024 meta-analysis of randomised, placebo-controlled trials found that probiotics reduced Pittsburgh Sleep Quality Index (PSQI) scores at 4-6 and 8-16 weeks and delivered small but significant gains in sleep efficiency; effects on sleep duration and insomnia severity were less consistent, and risk-of-bias/potential publication bias were noted. [Salehi Asl Mina (2026); evidence level 1]
• 14 18 Evidence specific to exercise populations remains limited and heterogeneous. [Salehi Asl Mina (2026); evidence level 1]
• Recently, alterations in gut microbiota composition have emerged as potential risk factors for the development of FC. [Park Hyung Gyu (2026); evidence level 2]
• Several studies have reported that gut microbiota dysbiosis-particularly a reduced abundance of,,, and-is associated with FC. [Park Hyung Gyu (2026); evidence level 2]

How To Read This Evidence

Evidence level 1 generally reflects systematic reviews or meta-analyses. Level 2 includes randomized trials, guidelines, or public-health guidance. Level 3 usually reflects observational or narrative-review evidence. Level 4 is weaker or early-stage evidence. The level is a sorting aid, not a final quality grade.

Practical Interpretation

There is at least one systematic-review style source in the current set, so it deserves more weight than single-study evidence. There is trial evidence in the current set, but population and intervention details still matter. For probiotic sleep randomized trial, the next editorial step is to add more targeted sources and separate strong findings from early or indirect evidence.

Limits Of This First Pass

This is a small-batch MVP article. It uses the first ingested sources for this topic and should be expanded with more targeted searches, license review, and human editorial checks before being treated as a definitive review.

References

• Salehi Asl Mina (2026). The effect of probiotic and synbiotic supplementation on sleep parameters in exercised population: a systematic review and synthesis without meta-analysis (SWiM) of randomized controlled trials. DOI: 10.1080/15502783.2026.2670564. PMCID: PMC13202683. PMID: 42184272. License: CC BY 4.0. https://pmc.ncbi.nlm.nih.gov/articles/PMC13202683/
• Park Hyung Gyu (2026). Effects of a spore-forming probiotic blend on bowel habits and physical well-being in adults with functional constipation: A randomized, double-blind, placebo-controlled trial. DOI: 10.1371/journal.pone.0337019. PMCID: PMC13108732. PMID: 42030329. License: CC BY 4.0. https://pmc.ncbi.nlm.nih.gov/articles/PMC13108732/

Safety Note

Health information can change, and individual risk depends on medical history, medications, pregnancy status, age, and diagnosis. Talk with a qualified clinician before changing treatment, supplement, or medication routines.