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Related Experiment Videos

Iron absorption from typical Latin American diets.

A Acosta, M Amar, S C Cornbluth-Szarfarc

    The American Journal of Clinical Nutrition
    |June 1, 1984
    PubMed
    Summary

    Iron absorption varied significantly across Latin American diets due to enhancers and inhibitors. This research informs strategies to combat iron deficiency through dietary analysis and fortification programs.

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    Area of Science:

    • Nutritional Science
    • Public Health
    • Human Physiology

    Background:

    • Iron deficiency remains a significant global health concern, particularly in developing regions.
    • Dietary factors heavily influence iron bioavailability and absorption, impacting nutritional status.
    • Understanding regional dietary patterns is crucial for addressing iron deficiency anemia.

    Purpose of the Study:

    • To quantify iron absorption from typical diets in several Latin American countries.
    • To identify dietary components that enhance or inhibit iron absorption.
    • To assess the adequacy of dietary iron to meet physiological requirements.

    Main Methods:

    • Utilized the extrinsic label method to measure iron absorption in vivo.
    • Analyzed the composition of representative diets from Argentina, Brazil, Chile, Mexico, Peru, and Venezuela.

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  • Differentiated between heme and non-heme iron content and absorption.

    • Main Results:

    • Significant inter-meal variations in iron absorption (up to 7-fold) were observed.
    • Dietary enhancers (e.g., meat) and inhibitors (e.g., tea, vegetables, bread) modulated iron absorption.
    • Total dietary iron in four countries was insufficient for normal subjects, though deficient subjects met requirements.
    • Heme iron contributed substantially (34-73%) to absorbed iron in five diets.

    Conclusions:

    • Dietary composition critically impacts iron absorption and status in Latin American populations.
    • The findings support the use of absorption studies to link diet, iron deficiency prevalence, and guide fortification efforts.
    • Targeted dietary modifications and food fortification programs can help mitigate iron deficiency.