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Iron availability from infant food supplements

T A Morck, S R Lynch, B S Skikne

    The American Journal of Clinical Nutrition
    |December 1, 1981
    PubMed
    Summary
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    Iron absorption from infant food supplements like corn-soya-milk was measured. Fortified iron in these foods is poorly absorbed, potentially supplying only half the daily iron needs for deficient infants.

    Area of Science:

    • Nutrition Science
    • Pediatric Nutrition
    • Food Fortification

    Background:

    • Iron deficiency is a significant global health concern, particularly in infants.
    • Infant food supplements are often fortified with iron to combat deficiency.
    • Assessing the bioavailability of iron in these supplements is crucial for effective public health strategies.

    Purpose of the Study:

    • To quantify iron absorption from various infant food supplements using radioiron.
    • To estimate the iron contribution of these supplements to the daily requirements of iron-deficient infants.

    Main Methods:

    • Radioiron absorption tests were conducted in adult male volunteers.
    • Five infant food supplements (corn-soya-milk, corn-soy blend, wheat-soy blend, wheat protein concentrate blend, whey-soy drink mix) were tested.

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  • Absorption data were extrapolated to estimate absorption in iron-deficient infants.

    • Main Results:

    • Mean iron absorption in iron-replete adults ranged from 0.6% to 1.4%.
    • Estimated iron absorption for iron-deficient infants ranged from 1.7% to 4.1%.
    • The fortification iron in these infant foods was found to be poorly bioavailable.

    Conclusions:

    • The iron fortification in the tested infant foods is poorly absorbed.
    • These supplements may only provide approximately 50% of the daily iron requirement for deficient children aged 6 months to 3 years.
    • Further research into more bioavailable iron fortification sources for infant foods is warranted.