probiome Sign in
← Conditions Mental health

Psychotic disorders

Compared within 1 study that had both: 26 people with psychotic disorders and 23 healthy people. No microbes less common in people with psychotic disorders, and none more common.

A difference is an association: it doesn’t mean these microbes cause, prevent or treat psychotic disorders.

Searching opens both lists and shows only matching rows.

Less common in psychotic disorders · 0

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

None compared.

More common in psychotic disorders · 0

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

None compared.

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 the United States.
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 · 191 microbes

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

No meaningful difference · 191
PubMed · human studies and reviews first

Recent research

All research on it
  1. Review Progress in neuro-psychopharmacology & biological psychiatry · 2025
    Oropharyngeal microbiota in patients with psychotic disorders: A scoping review on compositional and functional alterations.
    PubMed ↗
  2. Biological psychiatry · 2023
    Dysregulation of Microbiota in Patients With First-Episode Psychosis Is Associated With Symptom Severity and Treatment Response.
    PubMed ↗

Source: PubMed, U.S. National Library of Medicine · 2 linked papers, last 10 years