Plate · Bacillota

genus · NCBI 216851

Faecalibacterium

Species4

Products0 across its species

Samples47,387

The genus

Species in this genus

Include unnamed strains (1)

Species	Healthy guts ↓ 0–100%	Products
Faecalibacterium prausnitzii	90%	0
Faecalibacterium wellingii	36%	0
Faecalibacterium butyricigenerans	35%	0
Faecalibacterium gallinarum	<1%	0
Across the genus	91%	0

* Counted in the same healthy people as the species (whole-genome samples). All bars use the same 0–100% scale. A product with two Faecalibacterium species counts once in the genus total.

What they are

Its species' DNA

A C G T

Genome sizes · 4 Faecalibacterium species

Shortest we have Mycoplasmoides genitalium 0.6M

⋮ 762 shorter than any Faecalibacterium

Faecalibacterium butyricigenerans 2.6M

Faecalibacterium gallinarum 2.8M

Faecalibacterium wellingii 2.9M

Faecalibacterium prausnitzii 3.1M

⋮ 1,188 longer than any Faecalibacterium

Longest we have Bradyrhizobium altum 9.8M

Faecalibacterium genomes run from 2.6M to 3.1M: mid-sized for gut microbes.

One reference genome per species; strains vary.

Their ID genes, lined up: shared stretches form solid stripes

16S gene, V4 region, from one reference sequence per species, aligned so the same positions line up. A blank is a gap: letters other species have and this one lacks. Switch to “Only where they differ” to fade the letters they share.

From its species' genomes and lab tests

What its species can do

A species counts when most of its strains can. Not measured in anyone's gut. 3 of its 4 species aren't in either source yet.

Can make butyrate 1 of 1 species F. prausnitzii
Can make lactic acid 1 of 1 species F. prausnitzii
Can ferment fiber 1 of 1 species F. prausnitzii
Can eat inulin 1 of 1 species F. prausnitzii
Can eat pectin 1 of 1 species F. prausnitzii
Can make propionate 0 of 1 species None of its species
Can eat resistant starch 0 of 1 species None of its species
Can use lactose 0 of 1 species None of its species
Can feed on gut mucus 0 of 1 species None of its species
Can change bile acids 0 of 1 species None of its species
Can make B vitamins 0 of 1 species None of its species
Can make hydrogen sulfide 0 of 1 species None of its species
Can make methane 0 of 1 species None of its species

What’s typical · a description, not a comparison

In healthy guts

Everyone · 12,213 people · 129 studies

How common

Found in 91% of healthy people.

How big a slice of the gut

largest Bacteroides 9.8%
2nd largest Phocaeicola 9.1%
3rd largest Segatella 6.4%
4th largest Bifidobacterium 6.2%
5th largest Faecalibacterium 5.4%
6th largest Alistipes 5.2%
7th largest Blautia 3.6%
8th largest Ruminococcus 3.0%
650 other microbes, each a sliver 32.3%
18.9%

On average, 5.4% of the microbes in a healthy gut: the 5th largest slice.

By age and sex

Every group, drawn the same way. Only some samples record age or sex, so each group says how many people it comes from. Tap one to see it above.

By age

367 people · 11% carry it 0.7% of the microbes top 20

198 people · 5 studies 99% carry it 5.9% of the microbes 4th largest

57 people · 89% carry it 14.8% of the microbes 2nd largest

1,283 people · 27 studies 96% carry it 5.7% of the microbes 4th largest

142 people · 15 studies 96% carry it 5.8% of the microbes 4th largest

By sex

2,063 people · 90% carry it 5.1% of the microbes 5th largest

1,530 people · 29 studies 89% carry it 5.6% of the microbes 4th largest

Compared within studies that had both

In conditions

Compared with healthy people in the same studies, it’s less common in 20 conditions and more common in 1 condition. Only studies that had both are counted.

A difference is an association: it doesn’t mean this microbe causes, prevents or treats any of these.

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

Inflammatory bowel disease 120 people · 4 studies Less common in people with it Healthy 87% With it 63%
Prostate cancer 244 people · 3 studies Less common in people with it Healthy 97% With it 84%
Crohn's disease 1,658 people · 15 studies Less common in people with it Healthy 90% With it 70%
COVID-19 524 people · 9 studies Less common in people with it Healthy 72% With it 53%
Chronic fatigue syndrome 302 people · 3 studies Less common in people with it Healthy 97% With it 87%
Breast cancer 673 people · 3 studies Less common in people with it Healthy 95% With it 86%
Irritable bowel syndrome 528 people · 4 studies Less common in people with it Healthy 95% With it 88%
Chronic kidney disease 644 people · 9 studies Less common in people with it Healthy 76% With it 66%
Ulcerative colitis 1,015 people · 13 studies Less common in people with it Healthy 87% With it 80%
Major depression 134 people · 3 studies As many carry it in people with it Healthy 99% With it 98%
Carriers have less, in 3 of 3 studies (9.1% → 5.9% of their gut microbes).
Colorectal cancer 828 people · 21 studies As many carry it in people with it Healthy 92% With it 88%
Carriers have less, in 17 of 19 studies (5.4% → 3.3% of their gut microbes).
Type 2 diabetes 405 people · 12 studies As many carry it in people with it Healthy 81% With it 80%
Carriers have less, in 7 of 8 studies (5.1% → 3.9% of their gut microbes).
Diarrhea 263 people · 2 studies Less common in people with it Healthy 92% With it 44%
Tuberculosis 38 people · 2 studies Less common in people with it Healthy 100% With it 71%
Neuroblastoma 95 people · 2 studies Less common in people with it Healthy 83% With it 62%
Cholestasis 69 people · 2 studies Less common in people with it Healthy 78% With it 59%
Diabetic retinopathy 53 people · 2 studies As many carry it in people with it Healthy 86% With it 85%
Carriers have about half as much, in 2 of 2 studies (5.0% → 2.0% of their gut microbes).
Anorexia nervosa 153 people · 2 studies As many carry it in people with it Healthy 99% With it 97%
Carriers have less, in 2 of 2 studies (5.1% → 4.2% of their gut microbes).
Calicivirus infections 31 people · 1 study Less common in people with it Healthy 100% With it 39%
Diffuse large B-cell lymphoma 35 people · 1 study Less common in people with it Healthy 100% With it 46%
Clostridium infections 24 people · 1 study Less common in people with it Healthy 100% With it 54%
Autoimmune diseases of the nervous system 16 people · 1 study More common in people with it Healthy 31% With it 88%
Blood cancers 29 people · 1 study Less common in people with it Healthy 97% With it 55%
Alcoholic liver cirrhosis 17 people · 1 study Less common in people with it Healthy 93% With it 47%
Mycoplasma pneumonia 81 people · 1 study Less common in people with it Healthy 94% With it 62%
Cystic fibrosis 52 people · 1 study Less common in people with it Healthy 70% With it 35%

PubMed · human studies and reviews first

Recent research

No recent human studies or reviews yet. Probiome follows PubMed for the few hundred most-studied microbes; rarer species often only show up in large surveys. Search PubMed for this genus ↗