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Atopic dermatitis

Compared within 1 study that had both: 226 people with atopic dermatitis and 112 healthy people. 16 microbes are less common in people with atopic dermatitis, and 1 more common.

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

Phylum

Searching opens both lists and shows only matching rows.

Less common in atopic dermatitis · 16

Strongest first, then the biggest gap · Each figure is 10 people Strongest first · Each figure is 10 people
  1. Anaeromassilibacillus senegalensis in 1 study Healthy 20% atopic dermatitis 4.0%
  2. Lentihominibacter faecis in 1 study Healthy 13% atopic dermatitis 2.2%
  3. Eisenbergiella tayi in 1 study Healthy 25% atopic dermatitis 9.3%
  4. Evtepia gabavorous in 1 study Healthy 21% atopic dermatitis 7.1%
  5. Ruthenibacterium lactatiformans in 1 study Healthy 55% atopic dermatitis 35%

More common in atopic dermatitis · 1

Strongest first, then the biggest gap · Each figure is 10 people Strongest first · Each figure is 10 people
  1. Faecalimonas umbilicata in 1 study Healthy 2.7% atopic dermatitis 14%

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 South Korea.
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 · 227 microbes

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

No meaningful difference · 227
PubMed · human studies and reviews first

Recent research

All research on it
  1. Observational Genome medicine · 2026
    Maternal-prenatal gut microbiome-systemic metabolome perturbations and TH2-skewed immunity link to offspring gut microbiome disruption and atopic dermatitis susceptibility.
    PubMed ↗
  2. Systematic review Experimental dermatology · 2026
    The Emerging Role of Gut Microbiota in Inflammatory Skin Diseases: A Systematic Review.
    PubMed ↗
  3. Randomized trial Nutrients · 2025
    Effect of Supplementation with a Specific Probiotic (Bifidobacterium bifidum PRL2010) in Pregnancy for the Prevention of Atopic Dermatitis in Children: Preliminary Results of a Randomized Trial.
    PubMed ↗
  4. Observational The Journal of allergy and clinical immunology · 2024
    Developmental trajectories of atopic dermatitis with multiomics approaches in the infant gut: COCOA birth cohort.
    PubMed ↗
  5. Observational Journal of medicine and life · 2024
    Gut microbiota profile and atopic dermatitis in the first year of life.
    PubMed ↗

Source: PubMed, U.S. National Library of Medicine · 69 linked papers, last 10 years