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Selenium and iodine intakes and status in New Zealand and Australia.

Abstract

Most New Zealand soils contain relatively low concentrations of the anionic trace elements F, I and Se. Some areas of Australia also have a history of I deficiency. In view of current interest in establishing nutrient reference intakes for Se and I in New Zealand and Australia, it is timely to review current understanding of the intakes and status of these two elements. In spite of a recent increase in Se status, the status of New Zealanders remains low compared with populations of many other countries and may still be considered marginal, although the clinical consequences of the marginal Se status are unclear. There are no recent reports of blood Se levels in Australia, but earlier reports indicate that they were generally greater than those of New Zealanders. Similarly, the consequences of decreasing I status in Australia and New Zealand are unclear. Mild I deficiency in New Zealand has resulted in enlarged thyroid glands indicating an increased risk of goitre. Currently there is little evidence, however, of any associated clinical disease. Public health recommendations to reduce salt intake, together with the reduction in I content of dairy products, are likely to result in further decreases in the I status of New Zealand and Australian residents. Some action is needed to prevent this decline and it may be necessary to consider other means of fortification than iodized salt. The consequences of possible interactions between Se and I in human nutrition are also unclear and no practical recommendations can be made.

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  • Publisher Full Text
  • Authors+Show Affiliations

    Department of Human Nutrition, University of Otago, Dunedin, New Zealand. christine.thomson@stonebow.otago.ac.nz

    Source

    The British journal of nutrition 91:5 2004 May pg 661-72

    MeSH

    Australia
    Diet
    Dietary Supplements
    Food
    Health Status
    Humans
    Iodine
    New Zealand
    Selenium
    Thyroid Diseases

    Pub Type(s)

    Journal Article
    Review

    Language

    eng

    PubMed ID

    15137917

    Citation

    TY - JOUR T1 - Selenium and iodine intakes and status in New Zealand and Australia. A1 - Thomson,Christine D, PY - 2004/5/13/pubmed PY - 2004/6/24/medline PY - 2004/5/13/entrez SP - 661 EP - 72 JF - The British journal of nutrition JO - Br. J. Nutr. VL - 91 IS - 5 N2 - Most New Zealand soils contain relatively low concentrations of the anionic trace elements F, I and Se. Some areas of Australia also have a history of I deficiency. In view of current interest in establishing nutrient reference intakes for Se and I in New Zealand and Australia, it is timely to review current understanding of the intakes and status of these two elements. In spite of a recent increase in Se status, the status of New Zealanders remains low compared with populations of many other countries and may still be considered marginal, although the clinical consequences of the marginal Se status are unclear. There are no recent reports of blood Se levels in Australia, but earlier reports indicate that they were generally greater than those of New Zealanders. Similarly, the consequences of decreasing I status in Australia and New Zealand are unclear. Mild I deficiency in New Zealand has resulted in enlarged thyroid glands indicating an increased risk of goitre. Currently there is little evidence, however, of any associated clinical disease. Public health recommendations to reduce salt intake, together with the reduction in I content of dairy products, are likely to result in further decreases in the I status of New Zealand and Australian residents. Some action is needed to prevent this decline and it may be necessary to consider other means of fortification than iodized salt. The consequences of possible interactions between Se and I in human nutrition are also unclear and no practical recommendations can be made. SN - 0007-1145 UR - https://www.unboundmedicine.com/medline/citation/15137917/full_citation L2 - https://www.cambridge.org/core/product/identifier/S0007114504000832/type/journal_article ER -