Methanobrevibacter spp.
Methanobrevibacter species are archaea—microorganisms distinct from bacteria—that primarily inhabit the human gut. These microbes are known for producing methane gas as a by-product of fermentation, especially from hydrogen and carbon dioxide. Elevated levels of Methanobrevibacter spp. have been linked to slowed intestinal transit and symptoms such as constipation and bloating. Unlike many bacteria, archaea are not affected by standard antibiotics, making their overgrowth more difficult to manage. Their presence offers insight into the balance of microbial communities and gas production within the gut.
Description
They are methane-producing archaea commonly found in the human gut, distinct from bacteria.
They affect gas production and intestinal transit; elevated levels are frequently associated with constipation and bloating.
No, since they are archaea, they are not susceptible to the typical antibiotics used for bacterial overgrowth.
It may indicate methane-dominant dysbiosis, which is commonly linked to reduced gut motility and functional bowel disorders.
