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Testing the reported long-term advantages of protein-fortified human milk in very low birth weight neonates
Augusto Biasini1, Erica Neri2, Marcello Stella3
1Donor Human Milk Bank Italian Association (AIBLUD), Milan, Italy.
Insights
Neonatal protein fortification in very low birth weight preterm infants showed no long-term benefits or harm at school age. While initial growth may improve, psychological outcomes revealed no significant differences, with higher externalizing symptoms reported in the supplemented group.
Area of Science:
- Neonatal nutrition
- Pediatric development
- Long-term health outcomes
Background:
- Preterm infants face growth challenges and developmental risks.
- Human milk fortification with protein and energy is used to improve early growth.
- Long-term effects of neonatal protein supplementation are not well-established.
Purpose of the Study:
- To determine if enhanced neonatal protein intake benefits preterm infants up to school age.
- To assess long-term anthropometric, renal, and psychological outcomes.
- To evaluate the persistence of early growth benefits.
Main Methods:
- Observational study comparing protein supplemented group (PSG) and control group (CG).
- 22 very low birth weight preterm infants received fortified human milk.
- 11 preterm infants received standard nutrition.
- Assessed anthropometrics, renal function, and Child Behavior Checklist at 9-11 years.
Main Results:
- No significant differences in weight, height, or BMI between PSG and CG at school age.
- No significant differences in internalizing psychological symptoms.
- Mothers reported significantly higher externalizing symptoms in the PSG infants.
Conclusions:
- Neonatal enteral protein supplementation in very low birth weight preterm infants has no significant long-term positive or adverse effects on growth or internalizing behaviors.
- Observed benefits of protein supplementation appear restricted to the neonatal period and early childhood.
- Higher externalizing symptoms in the supplemented group warrant further investigation.
Abstract:
Preterm infants are at-risk for extrauterine growth restriction and downward percentile-crossing between birth and discharge. Increased energy and protein intake through fortification of human milk during the first weeks of life has been associated with improved short-term growth and better developmental outcomes. The aim of this study was to evaluate whether these benefits persist up to children school age. The study was designed as an observational study. During hospitalization, 22 very low birth weight preterm infants were fed with increasing protein fortification of human milk (protein supplemented group, PSG). As a control group (CG), 11 preterm infants were fed with standard nutrition regimen. At children school age (9-11 years), we assessed anthropometric data (weight, height, BMI), global health (renal function), and specific psychological outcomes (Child Behavior Checklist 6-18). A global homogeneity between CG and PSG groups emerged: we found no significant differences in weight, height, and BMI, nor in internalizing symptom outcomes (all ps > 0.05). However, mothers reported significantly higher externalizing symptoms for the PSG infants compared to CG infants. Therefore, neonatal enteral protein supplementation in very low birth weight preterm infants leads to no positive nor adverse consequences in long-term assessment, suggesting that benefits are restricted to the neonatal term and first years of age.
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