Methanobrevibacter spp.
Methanobrevibacter species are archaea—microorganisms distinct from bacteria—that chiefly reside in the human gut. These microbes are recognised for producing methane gas as a by-product of fermentation, particularly from hydrogen and carbon dioxide. High 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 challenging 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 influence gas production and bowel movement; high levels are often associated with constipation and bloating.
No, as they are archaea, they are not affected by the usual antibiotics used for bacterial overgrowth.
It may indicate methane-dominant dysbiosis, which is commonly linked to reduced gut motility and functional bowel disorders.
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