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A study led by the University of Alberta followed more than 400 babies from the Edmonton Child Cohort Study (CHILD)
"It is well known that girls score higher (in the early stages), especially in cognition and language," said Anita Kozyrskyj, professor of pediatrics and principal investigator of the Microbial Flora Synergy Laboratory
"The difference between male and female intestinal microbiota is very subtle, but we do find from the child cohort study data that girls are more likely to have more of these Bacteroides in the early stages
Researchers led by Kozyrskyj and Associate Professor of Pediatrics Piush Mandhane studied the bacteria in baby stool samples and identified three different groups of bacteria with similar advantages
The study repeated similar findings from a study in the United States, which also showed an association between Bacteroides phylum and neurodevelopment
According to Kozyrskyj, the phylum Bacteroides is one of the very few bacteria that can produce sphingolipid metabolites, which are essential for the formation and structure of brain neurons
She said: "If there are more such microorganisms, they will produce more sphingolipids, which makes sense, then you should see some improvement in the formation of neuronal connections in our brains, cognitive and language scores.
According to Kozyrskyj, C-section is a factor that can significantly reduce the phylum Bacteroides
Although this finding does not necessarily mean that children with a low proportion of Bacteroides spp.
The team will continue to follow the infants participating in CHILD to determine whether these findings can predict autism or attention deficit/hyperactivity disorder
Kozyrsky said: "In the first one to two years of life, your brain is very plastic
Bacteroides-dominant gut microbiome of late infancy is associated with enhanced neurodevelopment
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