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Iodine deficiency is a lack of the trace element iodine. It may result in goiter (so-called endemic goiter), as well as cretinism, which results in developmental delays and other health problems. Iodine deficiency is an important public health issue as it is a preventable cause of intellectual disability. Iodine is an essential trace element; the thyroid hormones thyroxine and triiodothyronine contain iodine. In areas where there is little iodine in the diet—typically remote inland areas where no marine foods are eaten, iodine deficiency is common. It is also common in mountainous regions of the world where food is grown in iodine-poor soil. Prevention includes adding small amounts of iodine to table salt — a product known as ''iodized salt''. Iodine compounds have also been added to other foodstuffs, such as flour, water and milk in areas of deficiency.〔(【引用サイトリンク】url=http://www.thyroidmanager.org/Chapter20/20-frame.htm )〕 Seafood is also a well known source of iodine.〔(Iodine in Seaweed )〕 Iodine deficiency resulting in goiter occurs in 187 million people globally as of 2010 (2.7% of the population). It resulted in 2700 deaths in 2013 up from 2100 deaths in 1990. ==Signs and symptoms== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Iodine deficiency」の詳細全文を読む スポンサード リンク
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