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Gut microbiome of infants in hunter-gatherer society found to differ markedly from infants in urban areas

A team of researchers from Stanford University, dosage for metronidazole er for human beings Chan Zuckerberg Biohub, the University of California, Berkeley, and New York University Abu Dhabi has found that the gut microbiome of infants living in a hunter-gatherer society in Tanzania is markedly different from the gut microbiome of infants living in modern urban areas. In a study published in the journal Science, the group conducted ribosomal RNA sequencing on more than 100 stool samples obtained from Hadza infants and compared them to similar data stored in public databases.

Noting that most biome gut sequencing research has been conducted on people living in urban areas, the researchers wondered about the gut biomes of people living in remote, non-urban settings. Noting also that some prior research has shown that people living in such areas tend to have a more diverse gut biome than people living in urban areas, they wondered about the gut biomes of infants in such places.

The team collected stool samples from dozens of Hadza infants living in Tanzania, along with stool samples collected from 23 of the infant’s mothers. They then conducted ribosomal RNA sequencing on all of the samples to determine the kinds of bacteria in their guts that make up the biome. They compared the diversity of the gut microbiomes in the infants in Tanzania with those in the guts of infants living in modern urban areas around the world. They found that the Hadza infants had more diversity in their guts after approximately six months than did infants living in urban areas. They also found that approximately 20% of the bacteria types found in the Hadza infants’ microbiomes had not been previously documented.

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