Dietary Reference Intakes The Essential Guide to Nutrient Requirements (2006) / Chapter Skim
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From page 320... ...
TABLE 1 Dietary Reference Intakes for Iodine by Life Stage Group DRI values (mg/day) EARa RDAb AIc ULd males females males females Life stage group NDe 0 through 6 mo 110 7 through 12 mo 130 ND 1 through 3 y 65 65 90 90 200 4 through 8 y 65 65 90 90 300 9 through 13 y 73 73 120 120 600 14 through 18 y 95 95 150 150 900 19 through 30 y 95 95 150 150 1,100 31 through 50 y 95 95 150 150 1,100 51 through 70 y 95 95 150 150 1,100 ≥ 70 y 95 95 150 150 1,100 Pregnancy £ 18 y 160 220 900 19 through 50 y 160 220 1,100 Lactation £ 18 y 209 290 900 19 through 50 y 209 290 1,100 a EAR = Estimated Average Requirement.
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From page 321... ...
PART III: IODINE 321 IODINE I odine is an essential component of thyroid hormones that are involved in the regulation of various enzymes and metabolic processes. These hormones regulate many key biochemical reactions, including protein synthesis and enzymatic activity.
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DRIs: THE ESSENTIAL GUIDE TO NUTRIENT REQUIREMENTS 322 widely used in many countries as an additive to salt, is rapidly reduced to io dide and completely absorbed. Once in the circulation, iodide is principally removed by the thyroid gland and kidneys.
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From page 323... ...
PART III: IODINE 323 Pregnancy £ 18 y through 50 y Balance data during pregnancy Lactation £ 18 y Adolescent female EAR plus average amount of iodine secreted in human milk 19 through 50 y Adult female EAR plus average amount of iodine secreted in human milk The UL The Tolerable Upper Intake Level (UL) is the highest level of daily nutrient intake that is likely to pose no risk of adverse effects for almost all healthy people.
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From page 324... ...
DRIs: THE ESSENTIAL GUIDE TO NUTRIENT REQUIREMENTS 324 centrate iodine from seawater. Processed foods may also have higher levels due to the addition of iodized salt or additives such as calcium iodate, potassium iodate, potassium iodide, and cuprous iodide.
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From page 325... ...
PART III: IODINE 325 INADEQUATE INTAKE AND DEFICIENCY In North America, where much of the iodine consumed is from salt iodized with potassium iodide, symptoms of iodine deficiency are rare. However, most countries currently have some degree of iodine deficiency, including some industrialized countries in Western Europe.
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From page 326... ...
DRIs: THE ESSENTIAL GUIDE TO NUTRIENT REQUIREMENTS 326 • Thyroiditis • Goiter • Hypothyroidism (elevated thyroid stimulating hormone [TSH]
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From page 327... ...
PART III: IODINE 327 In North America, where much of the iodine consumed is from 3 salt iodized with potassium iodide, symptoms of iodine deficiency are rare. However, most countries currently have some degree of iodine deficiency, including some industrialized countries in Western Europe.
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