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Early Gut Microbiota and Neurodevelopmental Trajectories: Implications for Pediatric Neuropsychiatric Vulnerability-A

Vasile Valeriu Lupu1, Alin Horatiu Nedelcu1, Ingrith Miron1

  • 1Grigore T. Popa University of Medicine and Pharmacy, 700115 Iasi, Romania.

Nutrients
|May 27, 2026
PubMed

Insights

The gut microbiome significantly influences brain development through the gut-brain axis. Dysbiosis is linked to neurodevelopmental disorders, but interventions like probiotics show promise.

Area of Science:

  • Neuroscience
  • Microbiology
  • Developmental Biology

Background:

  • Neurodevelopment involves neural network formation and circuit maturation.
  • The gut microbiome is a key regulator of neurodevelopment via the gut-brain axis.
  • Microbiota influences neurotransmitters, metabolites, and immune signaling.

Purpose of the Study:

  • To review dysbiosis patterns in neurodevelopmental disorders.
  • To elucidate mechanisms of microbiome influence on neuronal development.
  • To present microbiota-targeted interventions for neurodevelopment.

Main Methods:

  • Narrative review of existing literature.
  • Analysis of biological mechanisms (immune-neuronal, metabolomic, neuroendocrine).
  • Summary of intervention strategies (diet, probiotics, prebiotics, FMT).

Main Results:

  • Gut microbiota disturbances (dysbiosis) correlate with neuropsychiatric and neurodevelopmental disorders.
  • Mechanisms include neurotransmitter regulation, metabolite production (SCFAs), and immune modulation.
  • Microbiota impacts microglia, synaptogenesis, and neuronal plasticity.

Conclusions:

  • Microbiota modulation offers potential for preventing/treating neurodevelopmental dysfunctions.
  • Dietary adjustments, probiotics, prebiotics, and FMT are emerging interventions.
  • Rigorous clinical trials are needed to validate these strategies for pediatric management.

Keywords:
early life programminggut microbiotagut–brain axisneurodevelopmentnutritionpediatric neuropsychiatric disorders

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