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Ferritin levels in human milk.

W S Dempster, H D Heese, F H Pocock

    Annals of Tropical Paediatrics
    |September 1, 1986
    PubMed
    Summary
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    Breast milk ferritin levels are highest in the first few days postpartum, declining significantly by day 7. Maternal serum ferritin shows a weak correlation with early breast milk ferritin.

    Area of Science:

    • Human physiology
    • Lactation biology
    • Nutritional science

    Background:

    • Ferritin, an iron-storage protein, plays a crucial role in iron homeostasis.
    • Iron is essential for infant development, and breast milk is the primary source of nutrition for newborns.
    • Understanding ferritin dynamics in breast milk is important for assessing infant iron status.

    Purpose of the Study:

    • To quantify ferritin concentrations in breast milk over time postpartum.
    • To investigate the relationship between maternal serum ferritin and breast milk ferritin.
    • To discuss the potential biological significance of breast milk ferritin.

    Main Methods:

    • Breast milk samples were collected from 24 mothers at 3 days, 7 days, 6 weeks, and 3 months postpartum.

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  • Ferritin levels in breast milk were measured quantitatively.
  • Maternal serum ferritin concentrations were measured at delivery.
  • Statistical analysis was performed to determine correlations.

    • Main Results:

    • Highest breast milk ferritin concentrations were observed at 3 days postpartum.
    • A significant decline in ferritin levels was noted by 7 days postpartum, with negligible amounts at 6 weeks and 3 months.
    • A significant but weak positive correlation (r = 0.475, P < 0.05) was found between maternal serum ferritin at delivery and breast milk ferritin at 3 days postpartum.

    Conclusions:

    • Breast milk ferritin levels exhibit a rapid decline in the early postpartum period.
    • Maternal iron status, as indicated by serum ferritin, may weakly influence early breast milk ferritin concentrations.
    • The biological role of ferritin in breast milk warrants further investigation.