NUTR 3210 Lecture Notes - Lecture 9: Triiodothyronine, Enterocyte, Beta-Carotene
19 Nov 2016
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Document Summary
The mineral iodine exists as i2 (elemental iodine) or as the anion iodide (i-): iodide is the form we find in our diet (exists as i- in our diet) A lot of geographical areas are deficient in iodine, with close to 30% of the world"s population estimated to live in areas of deficiency: rain washes iodide out of most inland soils. Iodide is very water soluble: meaning that it is found concentrated in the ocean: therefore, seafood is a good dietary source and intake is higher in costal populations. People in many countries, even in geographically deficient areas are exposed to adequate iodine in the diet because of iodide fortification of salt; however, even some developed countries are surprisingly devoid of fortification programs. The only role of iodide in the body is to participate in the synthesis of thyroid hormones. Thyroid hormones include t3 (triiodothyronine) and t4 (thyroxin)
