Infant Nutrition and Health

Human milk is a dynamic biological fluid whose composition—including bioactive proteins such as lactoferrin, complex carbohydrates called oligosaccharides, and a shifting microbial community—shapes how a newborn's gut, immune system, and brain develop in the earliest weeks of life. For preterm infants, whose systems are particularly vulnerable, understanding these components is urgent: conditions like necrotizing enterocolitis, a severe intestinal injury, remain a leading cause of mortality in neonatal intensive care units and are closely tied to feeding practices and microbiota establishment. Researchers are actively working to determine how the composition of human milk changes across lactation and between mothers, and whether targeted interventions—such as probiotic supplementation or donor milk fortification—can reliably replicate the protective effects seen with mother's own milk. How the gut microbial environment shaped by early nutrition translates into long-term growth and neurodevelopmental outcomes remains one of the field's most consequential open questions.

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Keywords

Human Milk CompositionPreterm InfantsNecrotizing EnterocolitisOligosaccharidesLactoferrinGrowth Outcomes