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← Conditions Immune systemRespiratory

Asthma

Compared within 1 study that had both: 36 people with asthma and 59 healthy people. 1 microbe is less common in people with asthma, and 2 more common.

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

Phylum

Searching opens both lists and shows only matching rows.

Less common in asthma · 1

Strongest first, then the biggest gap · Each figure is 10 people Strongest first · Each figure is 10 people
  1. Simiaoa sunii in 1 study Healthy 66% asthma 33%

More common in asthma · 2

Strongest first, then the biggest gap · Each figure is 10 people Strongest first · Each figure is 10 people
  1. Rikenellaceae bacterium in 1 study Healthy 5.1% asthma 28%
  2. Hungatella hathewayi in 1 study Healthy 32% asthma 64%

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 · 258 microbes

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

No meaningful difference · 258
PubMed · human studies and reviews first

Recent research

All research on it
  1. Review Nutrients · 2026
    From Diet to Dysbiosis: How Nutritional Factors Shape Gut Microbiota and Drive Airway Inflammation in Pediatric Asthma.
    PubMed ↗
  2. Randomized trial International immunopharmacology · 2026
    Exploratory pilot trial of a multicomponent immunonutritional supplement in children with allergic asthma and rhinitis: The INAPRA study.
    PubMed ↗
  3. Randomized trial Acta microbiologica et immunologica Hungarica · 2026
    Effects of montelukast combined with inhaled corticosteroids on the airway-gut microbiome and immune regulation in children with asthma.
    PubMed ↗
  4. Review Medicine · 2026
    Evolving landscapes in childhood asthma-gut microbiota research: A bibliometric analysis from 2000 to 2024.
    PubMed ↗
  5. Observational The Journal of allergy and clinical immunology · 2026
    Interactions between host genetics and gut microbiome influence susceptibility to childhood asthma and lung function.
    PubMed ↗

Source: PubMed, U.S. National Library of Medicine · 140 linked papers, last 10 years