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Properties of IodineThere are many properties of iodine that make it an important component of human nutrition. • trace mineral • crucial component of thyroid hormones – converted to thyroxine • a proper functioning thyroid regulates metabolism, growth, reproduction and the synthesis of protein • protects against toxic effects of radioactive materials • needed for production of energy in the cells • hypothyroidism and iodine deficiency are linked • iodine and thyroid are linked: deficiency can produce hypothyroidism (slow thyroid producing too little hormones), goiter and other conditions Nutr 1995 • deficiency symptoms of iodine include, among others, the fact that in pregnancy deficiency can cause physical and mental retardation in baby Am J Clin Nutr 1996 Forms • as potassium iodide - the most bioactive form
• Adults 150 mcg/day; Pregnant women 220 mcg/day • Teens 120-150 mcg/day • Children 1-4 years 90 mcg/day; 4+ years 90 mcg/day
As potassium iodide: • Adults 225 mcg/day • Teens 150 mcg/day • Children 1-4 years 50 mcg/day; 4+ years 100 mcg/day Toxicity • no reported cases of iodine toxicity • too high intake could cause hyperthyroidism (over-active thyroid) or goiter. Consult your MD with any concern about levels and amounts.
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