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Zinc metabolism under physiological conditions.

W P Leary, J V Olhaberry, A J Reyes

    South African Medical Journal = Suid-Afrikaanse Tydskrif Vir Geneeskunde
    |August 20, 1983
    PubMed
    Summary

    Zinc, the sixth most common cation, is vital for human health, with adults needing 15 mg daily. Primarily absorbed in the small intestine, it

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    Area of Science:

    • Human physiology
    • Nutritional science
    • Biochemistry

    Background:

    • Zinc is the sixth most common cation in the human body.
    • Adults require 15 mg of zinc daily.
    • Animal-based foods are the richest dietary sources of zinc.

    Purpose of the Study:

    • To summarize the physiological role and metabolism of zinc in the human body.
    • To highlight dietary requirements and absorption mechanisms.
    • To describe zinc transport and excretion pathways.

    Main Methods:

    • Literature review of zinc metabolism.
    • Analysis of dietary requirements and absorption data.
    • Summary of physiological distribution and excretion.

    Main Results:

    • Zinc absorption ranges from 10-25% of ingested amounts, occurring in the small intestine.
    • Plasma zinc is transported via proteins and amino acids.
    • The body distributes zinc widely, with excretion mainly through feces, urine, and sweat.

    Conclusions:

    • Zinc is an essential mineral with specific absorption, transport, and excretion processes.
    • Understanding zinc metabolism is crucial for maintaining human health and nutrition.
    • Dietary intake and physiological handling of zinc are key aspects of human mineral balance.

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