articleMicroorganismsJan 16, 2026GOLD OA

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

Amsterdam Neuroscience · Amsterdam Institute for Addiction Research · +3 more institutions

PubMed
Indexed incrossrefdoajpubmed

Abstract

Early life is a critical window for immune system development, during which the gut microbiome shapes innate immunity, antigen presentation, and adaptive immune maturation. Disruptions in microbial colonization—driven by factors such as cesarean delivery, antibiotic exposure, and formula feeding—deplete beneficial early-life taxa (e.g., Bifidobacterium, Bacteroides, and Enterococcus) and impair key microbial functions, including short-chain fatty acid (SCFA) production by these keystone species, alongside regulatory T cell induction. These dysbiosis patterns are associated with an increased risk of pediatric autoimmune diseases, notably type 1 diabetes, inflammatory bowel disease, celiac disease, and juvenile…

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