Does Breastfeeding Small for Gestational Age Neonates Promote a Healthier Growth Pattern? A Narrative Review

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Background: Small for gestational age neonates represent a population at risk of growth failure or deviant growth patterns and long-term metabolic complications. Breastfeeding has been identified as a critical factor in promoting healthier growth and long-term metabolic health in both full-term and preterm appropriate for gestational age infants, but similar studies in small for gestational age infants are limited. The aim of this narrative review is to assess the impact of breastfeeding on growth and body composition in small for gestational age neonates. Methods: The PubMed and Google Scholar databases were screened for the relevant literature. The following terms, were used: “low birth weight”, “in utero growth restriction”, “small for gestational age”, “human milk”, and “growth”. The initial screening identified 57 relevant studies. Thirteen of them fulfilled the eligibility criteria and were included in this narrative review. Results: In preterm small for gestational age neonates, human milk nutrition was associated with healthier catch-up growth without excessive fat accumulation. Fortification strategies were associated with enhanced growth outcomes without increased incidence of neonatal morbidities. In the context of full-term, small for gestational age neonates, exclusive breastfeeding has been demonstrated to be associated with healthy catch-up growth. Furthermore, human milk nutrition has been shown to mitigate the predisposition of these children to obesity and cardiometabolic complications. Conclusions: According to the limited extant literature, human milk feeding has been identified as a potentially protective factor for small for gestational age neonates, promoting healthier growth patterns and long-term cardiometabolic health. However, larger prospective studies are needed to evaluate human milk feeding and human milk fortification in association with growth and long-term outcomes in small for gestational age infants.

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