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Gut microbiota composition during infancy and subsequent behavioural outcomes

Amy Loughman1, Anne-Louise Ponsonby2, Martin O'Hely3

  • 1Deakin University, Geelong, Victoria 3220, Australia.

Ebiomedicine
|February 17, 2020
PubMed

Insights

A study found that lower levels of Prevotella bacteria in infants at 12 months were linked to more behavioral problems at two years. This highlights the gut microbiome

Area of Science:

  • Microbiome research
  • Developmental psychology
  • Pediatric health

Background:

  • Longitudinal human data on the gut microbiota-brain axis is limited.
  • Understanding infant gut microbiome composition is crucial for development.

Purpose of the Study:

  • To investigate the relationship between infant gut microbiota composition and later behavioral outcomes.
  • To identify specific microbial patterns associated with behavioral development.

Main Methods:

  • Analysis of fecal microbiota from 201 children at 1, 6, and 12 months.
  • Behavioral outcomes assessed at 2 years of age within a longitudinal Australian birth cohort.
  • Statistical analysis controlling for confounding variables.

Main Results:

  • A significant association was found between lower Prevotella abundance at 12 months and increased behavioral problems at 2 years.
  • Internalizing Problem scores were particularly associated with reduced Prevotella.
  • Antibiotic exposure was the strongest predictor of decreased Prevotella abundance.

Conclusions:

  • Infant gut microbiota composition is strongly linked to subsequent behavioral outcomes.
  • Findings underscore the importance of responsible antibiotic use in early life for neurodevelopment.
  • This research provides critical longitudinal evidence for the gut-brain connection in infancy.
Abstract

Keywords:
BehaviourGut-brain axisInfantMicrobiota

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