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Early-Life Gut Microbiota: Education of the Immune System and Links to Autoimmune Diseases

Pleun de Groen1,2, Samantha C Gouw3, Nordin M J Hanssen1,2

  • 1Department of (Experimental) Vascular Medicine, Amsterdam UMC Location University of Amsterdam, 1105 AZ Amsterdam, The Netherlands.

Microorganisms
|January 28, 2026
PubMed

Insights

Early life gut microbiome development is crucial for immune maturation. Disruptions increase autoimmune disease risk, but microbiome restoration strategies haven't yet prevented disease onset.

Area of Science:

  • Immunology
  • Microbiology
  • Pediatrics

Background:

  • The early-life gut microbiome critically influences immune system development, including innate immunity, antigen presentation, and adaptive immune maturation.
  • Disruptions like C-section, antibiotics, and formula feeding can deplete beneficial bacteria and impair functions like short-chain fatty acid (SCFA) production.
  • These early-life dysbiosis patterns are linked to increased risks of pediatric autoimmune diseases such as type 1 diabetes and inflammatory bowel disease.

Purpose of the Study:

  • To review current evidence on how the early-life gut microbiota impacts immune maturation and the development of autoimmune diseases.
  • To focus on human studies investigating interventions aimed at restoring the early-life microbiome.
  • To highlight the need for better understanding of the microbiome-immune axis for developing preventive strategies.

Main Methods:

  • Systematic review of human observational and intervention studies.
  • Analysis of studies involving probiotics, synbiotics, vaginal microbial transfer, and maternal fecal microbiota transplantation.
  • Evaluation of reported outcomes related to microbiome restoration and autoimmune disease prevention.

Main Results:

  • Interventions can partially restore gut microbiome composition and function in early life.
  • No studies to date have reported the direct prevention of autoimmune disease development through early-life microbiome modulation.
  • A gap exists in understanding the direct causal link between microbiome modulation and autoimmune disease prevention.

Conclusions:

  • Targeting the early-life gut microbiome is a promising area for immune development research.
  • Further research, particularly longitudinal studies evaluating autoimmune outcomes post-modulation, is essential.
  • A deeper understanding of the early-life microbiome-immune axis is necessary to develop effective preventive strategies for autoimmune diseases.

Keywords:
dysbiosisearly-life microbiomegut microbiotaimmune developmentlong-term health and disease

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