Blautia is a recently discovered bacterial genus, capable of using hydrogen and carbon dioxide to create acetate. Species within this genus are among the most abundant members of the GI tract.Researchers have found levels of species within this genus are often diminished in elderly patients. In addition, diminished levels have also been found in mucosal samples of colorectal cancer patients. Increased levels of Blautia species have been observed in irritable bowel syndrome (IBS) patients, but this may reflect higher gas levels.

Blautia help us digest complex carbohydrates.

• doi 10.1371/journal.pone.0039743

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• doi 10.1111/1574-6976.12075