Sources of Dietary Iodine in Industrialized Countries
People in developing countries, particularly in rural areas, obtain most of their iodine from local food sources. In contrast, food in industrial countries frequently comes from distant geographical areas and may be extensively altered by additives, processing, preservatives, and packaging. Also, people in industrialized countries consume variable amounts of supplements, tonics, and drugs, each of which may contain iodine. Thus, the major factors to consider in assessing dietary iodine intake are: (1) the “natural” iodine content of foods; (2) the iodine added in food processing; (3) the amount and type of food consumed; (4) iodine supplements, e.g., iodized salt and various medicinal tonics; and (5) other ingesta, e.g., iodine-containing medicines.
KeywordsIodine Deficiency Iodine Intake Iodine Content Urinary Iodine Endemic Goiter
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