The Role of Early Enteral Protein Intake in Lean Mass Accretion

The first two weeks after birth are a critical period for preterm infants, marked by rapid changes and nutritional challenges. In our latest study, "Association Between Enteral Protein Intake and Fat-Free Mass Accretion in Very Preterm Infants" published in Neonatology this year, we explore how protein intake—both the amount and its source—impacts fat-free mass (FFM) accretion and overall growth during this crucial window.

Key Findings:

In our cohort of 78 very preterm infants (<32 weeks gestation), we found:

- Higher Enteral Protein Intake = Better Outcomes: Enteral protein intake (from milk or formula) was strongly linked to greater FFM accretion.

- Parenteral Protein Intake Challenges: Protein from intravenous nutrition showed less favorable associations with FFM gains.

- Overall Protein Intake Matters: Total protein intake (enteral + parenteral) was positively associated with weight gain.

Why It Matters:

FFM accretion is a key marker of healthy growth, representing lean tissue development essential for long-term health. Our findings suggest that optimizing enteral protein intake during the first two weeks could significantly influence growth trajectories in preterm infants.

What’s Next?

While these results are promising, they highlight the need for intervention studies to determine the ideal enteral protein intake for preterm infants during this critical period. By tailoring nutritional strategies, we can better support their unique growth and developmental needs.