Mediterraneibacter gnavus
Bacteria › Bacillota › Clostridia › Lachnospirales › Lachnospiraceae › Mediterraneibacter
Synonyms: Hominicoccus gnavus; Ruminococcus gnavus
MCA-BAC-000009
TaxID: 33038
| Rank: species
Biology & Ecology
Biology
Gram Statusunknown
Oxygen Toleranceobligate anaerobe
Ecology
Primary Nichesgut
Reservoirhuman
Clinical Profile
Pathobiont
yes
no
context dependent
unknown
Clinical Rolescommensal
Typical Specimenstool
Bloom Triggers
antibiotic exposure
Risk Contextspost-antibiotic
Clinical Associations:
E3
E3 — Strong human clinical evidence
E2 — Moderate human evidence
E1 — Limited / preliminary
Mediterraneibacter gnavus relative abundance was significantly higher in individuals with prior exposure to clindamycin, fluoroquinolones, or flucloxacillin, with disruptions persisting for 4–8 years post-prescription, in a multi-cohort observational study of 14,979 Swedish adults (SCAPIS, SIMPLER, MOS cohorts).
PMID:
41814006
E3
E3 — Strong human clinical evidence
E2 — Moderate human evidence
E1 — Limited / preliminary
Higher Mediterraneibacter gnavus relative abundance was positively associated with elevated BMI, waist-hip ratio, serum triglycerides, and C-reactive protein in the SCAPIS cohort (n≈10,456), consistent with a cardiometabolic risk profile.
PMID:
41814006
Last reviewed: 2026-04-01
Related Taxa
Shared Niche = same body site
Shared Risk = same vulnerable population
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