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Mineral elements: new perspectives

W Mertz

    Journal of the American Dietetic Association
    |September 1, 1980
    PubMed
    Summary
    This summary is machine-generated.

    Understanding human mineral requirements and trace element interactions is crucial. Dietary strategies, like combining iron with vitamin C or specific proteins, can enhance absorption and meet nutritional needs.

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    Area of Science:

    • Nutritional Science
    • Human Metabolism

    Background:

    • 1970s research highlighted the significance of trace element interrelationships and human mineral requirements.
    • Understanding these interactions has practical implications for public health and dietary guidelines.

    Purpose of the Study:

    • To summarize key findings on trace element interactions and human mineral needs.
    • To discuss practical applications for dietary planning, particularly concerning iron absorption and calcium-protein metabolism.

    Main Methods:

    • Review of research from the 1970s focusing on trace element interactions.
    • Analysis of dietary factors influencing mineral absorption, such as ascorbic acid and protein sources.
    • Examination of the 1980 revision of Recommended Dietary Allowances.

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    Main Results:

    • Iron absorption is enhanced by co-ingestion with ascorbic acid and/or meat, poultry, or fish.
    • The interplay between calcium and protein metabolism is a significant factor in nutritional requirements.
    • New guidelines include "ranges of safe and adequate intakes" for minerals and trace elements due to incomplete knowledge.

    Conclusions:

    • Copper and chromium are trace elements of particular importance for dietary adequacy.
    • Nutrient density per 1,000 kcal offers a broad assessment of copper and chromium intake.
    • Dietary planning must consider trace element interactions to ensure adequate human mineral requirements.