Bifidobacterium
Formerly Bifidibacterium.
Species in this genus
* Counted in the same healthy people as the species (whole-genome samples). All bars use the same 0–100% scale. A product with two Bifidobacterium species counts once in the genus total.
Its species' DNA
Bifidobacterium genomes run from 1.8M to 3.2M: small for gut microbes.
One reference genome per species; strains vary.
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.
What its species can do
A species counts when most of its strains can. Not measured in anyone's gut. 5 of its 25 species aren't in either source yet.
- Can ferment fiber 20 of 20 species B. longum, B. adolescentis, B. pseudocatenulatum, B. bifidum, B. catenulatum, B. breve and 14 more
- Can make lactic acid 17 of 17 species B. longum, B. adolescentis, B. pseudocatenulatum, B. bifidum, B. catenulatum, B. breve and 11 more
- Can use lactose 15 of 20 species B. longum, B. adolescentis, B. pseudocatenulatum, B. bifidum, B. catenulatum, B. breve and 9 more
- Can eat inulin 9 of 20 species B. longum, B. adolescentis, B. pseudocatenulatum, B. bifidum, B. breve, B. animalis and 3 more
- Can change bile acids 8 of 17 species B. longum, B. adolescentis, B. bifidum, B. catenulatum, B. breve, B. animalis and 2 more
- Can make B vitamins 8 of 17 species B. longum, B. adolescentis, B. pseudocatenulatum, B. catenulatum, B. breve, B. dentium and 2 more
- Can feed on gut mucus 3 of 17 species B. longum, B. bifidum, B. breve
- Can eat resistant starch 1 of 17 species B. adolescentis
- Can eat pectin 1 of 17 species B. scardovii
- Can make butyrate 0 of 17 species None of its species
- Can make propionate 0 of 17 species None of its species
- Can make hydrogen sulfide 0 of 17 species None of its species
- Can make methane 0 of 17 species None of its species
In healthy guts
Found in 88% of healthy people.
- 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, 6.2% of the microbes in a healthy gut: the 4th largest slice.
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.
In conditions
Compared with healthy people in the same studies, it’s less common in 7 conditions and more common in none. 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