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Prediabetes

Compared within 1 study that had both: 60 people with prediabetes and 60 healthy people. No genera less common in people with prediabetes, and 1 more common.

A difference is an association: it doesn’t mean these genera cause, prevent or treat prediabetes. GMrepo reports this group at the genus level only, so these are genera, not species.

Searching opens both lists and shows only matching rows.

Less common in prediabetes · 0

Strongest first, then the biggest gap · Each figure is 10 people Strongest first · Each figure is 10 people

None compared.

More common in prediabetes · 1

Strongest first, then the biggest gap · Each figure is 10 people Strongest first · Each figure is 10 people
  1. Turicibacter genus in 1 study Healthy 8.3% prediabetes 30%

Where these numbers come from

Studies
Only GMrepo projects that had people with the condition and healthy people, 10 or more of each. Numbers come from those studies, never from pooling.Sampled in China.
How common
The share of people whose sample has any of it, in the people with the condition and in the healthy people of those same studies. Tested within studies (Cochran–Mantel–Haenszel, corrected for testing many microbes); a difference counts when it is clear and meaningful (Cohen’s h of 0.2 or more).
Strength word
Counted by code from how many studies point the same way: Seen again and again (3 or more, none clearly the other way), Seen more than once (2, the majority), Seen once (1, listed last). Where studies disagree, a row isn’t listed.
Each study
Tap a row for every study’s own numbers, and for how much carriers have.
Analysis
Our analysis of GMrepo data. GMrepo on Data sources · Read the rules

Also compared · 35 genera

Compared within studies that had both, but not listed above.

No meaningful difference · 35
PubMed · human studies and reviews first

Recent research

All research on it
  1. Randomized trial Nature metabolism · 2025
    Combining a diet rich in fermentable carbohydrates with metformin improves glycaemic control and reshapes the gut microbiota in people with prediabetes.
    PubMed ↗
  2. Observational Metabolic syndrome and related disorders · 2024
    Quantification and Correlation Analysis of Bacteroides Species with Diabetes-Related Amino Acids in Individuals with Prediabetes and Type 2 Diabetes Mellitus.
    PubMed ↗
  3. Randomized trial Nutrients · 2024
    Impact of Combined Prebiotic Galacto-Oligosaccharides and Bifidobacterium breve-Derived Postbiotic on Gut Microbiota and HbA1c in Prediabetic Adults: A Double-Blind, Randomized, Placebo-Controlled Study.
    PubMed ↗
  4. Randomized trial Nutrients · 2023
    Effect of a 12-Week Polyphenol Rutin Intervention on Markers of Pancreatic β-Cell Function and Gut Microbiota in Adults with Overweight without Diabetes.
    PubMed ↗
  5. Randomized trial The Turkish journal of gastroenterology · 2022
    Metformin with Versus without Concomitant Probiotic Therapy in Newly Diagnosed Patients with Type 2 Diabetes or Prediabetes: A Comparative Analysis in Relation to Glycemic Control, Gastrointestinal Side Effects, and Treatment Compliance.
    PubMed ↗

Source: PubMed, U.S. National Library of Medicine · 20 linked papers, last 10 years