Bacteria · Species

Ruminococcus gnavus

Opportunist A mucin-degrader that blooms during IBD flares and makes an inflammatory polysaccharide — one of the more reproducible Crohn’s signals.

Associated with these conditions

Inflammatory bowel disease (IBD) Elevated

Blooms during Crohn’s flares and secretes an inflammatory polysaccharide — one of the more reproducible expansions.

Moderate evidence

Liver cirrhosis Elevated

Reported in HMDAD (1 cited study).

Moderate evidence

Autism spectrum (ASD) Associated with

Reported in Disbiome.

Preliminary

Irritable Bowel Syndrome Associated with

Reported in Disbiome.

Preliminary

Cystic fibrosis Associated with

Reported in Disbiome.

Preliminary

Type 2 diabetes Associated with

Reported in Disbiome.

Preliminary

Pervasive developmental disorder NOS Associated with

Reported in Disbiome.

Preliminary

Cardiovascular disease Associated with

Reported in Disbiome.

Preliminary

Cirrhosis Associated with

Reported in Disbiome.

Preliminary

Atopic wheeze Associated with

Reported in Disbiome.

Preliminary

Food allergy Associated with

Reported in Disbiome.

Preliminary

Primary sclerosing cholangitis Associated with

Reported in Disbiome.

Preliminary

Primary sclerosing cholangitis-IBD Associated with

Reported in Disbiome.

Preliminary

Spondyloarthritis Associated with

Reported in Disbiome.

Preliminary

Chronic kidney disease Associated with

Reported in Disbiome.

Preliminary

Chronic granulomatous disease Associated with

Reported in Disbiome.

Preliminary

Primary liver cancer Associated with

Reported in Disbiome.

Preliminary

Thyroid carcinoma Associated with

Reported in Disbiome.

Preliminary

Glycogen storage disease Associated with

Reported in Disbiome.

Preliminary

Generalized anxiety disorder Associated with

Reported in Disbiome.

Preliminary

Colon polyps Associated with

Reported in Disbiome.

Preliminary

Psoriasis Associated with

Reported in Disbiome.

Preliminary

Diaper dermatitis Associated with

Reported in Disbiome.

Preliminary

Schizophrenia Associated with

Reported in Disbiome.

Preliminary

Cholestasis Associated with

Reported in Disbiome.

Preliminary

Non-alcoholic fatty liver disease Associated with

Reported in Disbiome.

Preliminary

Coronary artery disease Associated with

Reported in Disbiome.

Preliminary

Pulmonary arterial hypertension Associated with

Reported in Disbiome.

Preliminary

Pressure ulcers Associated with

Reported in Disbiome.

Preliminary

Migraine Associated with

Reported in Disbiome.

Preliminary

Idiopathic central precocious puberty Associated with

Reported in Disbiome.

Preliminary

Attention Deficit Hyperactivity Disorder Associated with

Reported in Disbiome.

Preliminary

Lung cancer Associated with

Reported in Disbiome.

Preliminary

Fatigue Associated with

Reported in Disbiome.

Preliminary

Crohn Disease Associated with

Reported in Peryton.

Preliminary

Liver Neoplasms Associated with

Reported in Peryton.

Preliminary

Stomach Neoplasms Associated with

Reported in Peryton.

Preliminary

Coronary Heart Disease Associated with

Reported in Peryton.

Preliminary

Lung Neoplasms Associated with

Reported in Peryton.

Preliminary

Colorectal Neoplasms Associated with

Reported in Peryton.

Preliminary

Helps make

Tryptamineneurotransmitter

Produced by gut bacteria from tryptophan. It speeds gut transit and modulates serotonin signalling — one of the clearest cases of a microbe-made molecule acting on the host nervous system.

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