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Some nutritional aspects of trace metals.

P J Aggett, N T Davies

    Journal of Inherited Metabolic Disease
    |January 1, 1983
    PubMed
    Summary

    Determining human trace metal status is complex. Bioavailability from diets, especially artificial ones for children and meat substitutes, is crucial for adequate trace metal intake.

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    Area of Science:

    • Biochemistry
    • Human Nutrition
    • Trace Element Metabolism

    Background:

    • Manganese and chromium are essential trace metals with vital biochemical roles.
    • Accurate determination of human trace metal status presents significant challenges.
    • Factors influencing trace metal deficiency and bioavailability are critical considerations.

    Purpose of the Study:

    • To review the biochemical roles of manganese and chromium.
    • To discuss challenges in assessing human trace metal status.
    • To emphasize the impact of diet on trace metal bioavailability, particularly in artificial diets and meat substitutes.

    Main Methods:

    • Literature review of biochemical roles and deficiency factors.
    • Analysis of factors affecting trace metal bioavailability from various diets.
    • Case examples illustrating bioavailability issues in paediatric artificial diets.

    Main Results:

    • Dietary factors significantly alter the bioavailability of essential trace metals.
    • Artificial diets in paediatric care require careful assessment of trace metal content.
    • Current meat substitutes and extenders may have inadequate trace element profiles.

    Conclusions:

    • Investigating trace metal bioavailability is essential for artificial diets.
    • The trace element adequacy of meat substitutes needs thorough evaluation.
    • Trace metal supplementation is a consideration for intravenous feeding regimens.

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