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What does the research say about probiotics?

Ask a question. We search PubMed, grade how certain the evidence is and show you every study behind the answer.

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8,900+ PubMed studies 190+ probiotic strains 105+ health conditions

Most researched conditions

How much evidence exists, and what kind. Meta-analyses carry the most weight.

All conditions
Meta-analyses Systematic reviews Randomised trials Other designs

How an analysis is made

  1. Search PubMed

    Your question is expanded into search terms and matched against indexed PubMed records.

  2. Grade the evidence

    Meta-analyses and randomised trials count more than small or observational studies.

  3. Show every source

    Each claim links to the studies behind it, with study type, year and PMID.