Impact of Delivery Mode on Infant Gut Microbiota and Health Outcomes
Summary
Mode of delivery exerts a profound influence on the establishment and succession of the infant gut microbiota, with vaginal delivery typically seeding the neonatal intestine with maternal vaginal and faecal microbes, notably Bacteroides and Bifidobacterium species. In contrast, infants born by caesarean section often display reduced microbial diversity, delayed colonisation by key commensals and enrichment of opportunistic taxa. These early‐life alterations shape mucosal barrier maturation, innate and adaptive immune priming and metabolic programming. Such perturbations have been linked to an elevated risk of inflammatory conditions—such as asthma, atopic disorders and inflammatory bowel disease—as well as metabolic outcomes including obesity and progression of autoimmune diabetes. Growing evidence from animal models and human cohorts highlights mechanistic pathways involving epithelial tight junction integrity, cytokine signalling cascades (for example STAT3) and microbiota‐derived metabolites. Given rising global caesarean rates, understanding these interactions is crucial to inform strategies—such as breastfeeding support, targeted probiotics or metabolic supplementation—to mitigate adverse health trajectories and harness microbiota‐mediated resilience.
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Impact of Delivery Mode on Infant Gut Microbiota and Health Outcomes publication trend
The graph below shows the total number of articles in impact of delivery mode on infant gut microbiota and health outcomes across all publications each year (not limited to Nature Index journals).
Technical terms
Gut microbiota: The community of microorganisms residing in the gastrointestinal tract.
Dysbiosis: An imbalance in the composition or function of microbial communities.
Colonisation: The process by which microbes establish and proliferate within the host intestine.
Metabolomics: The large-scale study of small-molecule metabolites produced by biological processes.
Innate immunity: The host’s first line of defence against pathogens, comprising physical barriers and immune cell responses.
References
- Disrupted metabolic signatures in amniotic fluid associated with increased risk of intestinal inflammation in cesarean section offspring. Frontiers in Immunology (2023).
- Caesarean section and risk of type 1 diabetes. Diabetologia (2024).
- The mode of delivery affects the diversity and colonization pattern of the gut microbiota during the first year of infants' life: a systematic review. BMC Gastroenterology (2016).
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