How does a mother's microbiome shape her baby's? New study offers clues

At 2 to 4 months of age, infants share on average just over a third of their gut microbiome—an ecosystem seeded at birth that plays a role in shaping their future health—with their mother's gut or vaginal microbiome. That microbial sharing is notably higher when a mother has a vaginal birth as opposed to a C-section delivery.

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