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Iodine deficiency is a lack of the trace element iodine, an essential nutrient in the diet.It may result in metabolic problems such as goiter, sometimes as an endemic goiter as well as congenital iodine deficiency syndrome due to untreated congenital hypothyroidism, which results in developmental delays and other health problems.
Clinical vitamin A deficiency is particularly common among pregnant women, with prevalence rates as high as 9.8% in South-East Asia. [ 121 ] Estimates say that 28.5% of the global population is iodine deficient, representing 1.88 billion individuals. [ 125 ]
Iodine deficiency is the most common cause of primary hypothyroidism and endemic goiter worldwide. [8] [9] In areas of the world with sufficient dietary iodine, hypothyroidism is most commonly caused by the autoimmune disease Hashimoto's thyroiditis (chronic autoimmune thyroiditis). [8] [9] Hashimoto's may be associated with a goiter.
Iodine deficiency is the most common preventable cause of neonatal and childhood brain damage worldwide. [11] Although iodine is found in many foods, it is not universally present in all soils in adequate amounts. Most iodine, in iodide form, is in the oceans, where the iodide ions are reduced to elemental iodine, which then enters the ...
A national program with iodized salt started in 1992. A national survey of 1990 revealed the prevalence of iodine deficiency to be 20-80% in different parts of Iran indicating a major public health problem. Central provinces, far from the sea, had the highest prevalence of iodine deficiency. The national salt enrichment program was very successful.
Similarly, folate deficiency has been linked to neural tube defects. [74] Iodine deficiency is "the most common preventable cause of mental impairment worldwide." [75] [76] "Even moderate [iodine] deficiency, especially in pregnant women and infants, lowers intelligence by 10 to 15 I.Q. points, shaving incalculable potential off a nation's ...
Iodine deficiency is the leading cause of preventable intellectual disability, a result that occurs primarily when babies or small children are rendered hypothyroidic by no iodine. The addition of iodine to salt has largely destroyed this problem in wealthier areas, but iodine deficiency remains a serious public health problem in poorer areas ...
Desalination removes iodine from water and could increase the risk of iodine deficiency disorders. Israeli researchers claimed a possible link between seawater desalination and iodine deficiency, [ 130 ] finding iodine deficits among adults exposed to iodine-poor water [ 131 ] concurrently with an increasing proportion of their area's drinking ...