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[Zinc levels in term and preterm milk].

P A Ronayne de Ferrer1, A Weisstaub, N López

  • 1Universidad de Buenos Aires, Hospital Italiano, Buenos Aires, Argentina.

Archivos Latinoamericanos De Nutricion
|August 23, 2001
PubMed
Summary

Zinc levels in human milk are comparable between preterm and term mothers, with both groups showing normal values. Zinc concentration decreases significantly from colostrum to mature milk over time.

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Area of Science:

  • Human milk composition
  • Trace element analysis
  • Nutritional science

Context:

  • Zinc is vital for infant growth and immune function, particularly in preterm infants.
  • Previous studies indicated potentially low zinc levels in some preterm milk samples.
  • Assessing zinc content in human milk is crucial for infant nutrition.

Purpose:

  • To measure and compare zinc levels in milk from mothers of preterm and term infants.
  • To determine if zinc concentrations in human milk fall within established normal ranges.
  • To identify any significant differences in zinc content between term and preterm milk.

Summary:

  • This study analyzed zinc levels in milk from 24 preterm and 20 term mothers using atomic absorption spectrophotometry.
  • Both term and preterm milk samples exhibited zinc concentrations within normal ranges.
  • No significant differences in zinc levels were found between term and preterm milk, though a significant decrease was observed from colostrum to mature milk.

Impact:

  • Provides evidence that zinc levels in human milk are comparable between preterm and term mothers.
  • Reassures that standard milk provides adequate zinc, addressing previous concerns about preterm milk.
  • Highlights the natural decrease in zinc concentration as lactation progresses, important for infant feeding guidelines.

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