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Pagophagia is a form of the disorder pica involving the compulsive consumption of ice or iced drinks.〔 〕 It has been associated with iron deficiency anemia,〔 〕 and shown to respond to iron supplementation, leading some investigators to postulate that some forms of pica may be the result of nutritional deficiency. Chewing ice may lessen pain in glossitis related to iron deficiency anemia.〔Mesa, Ruben, MD. (Craving and chewing ice: A sign of Anemia? ), MayoClinic.com.〕 However, the American Dental Association recommends not chewing ice because it can crack teeth; instead ice should be allowed to melt in the mouth.〔The American Dental Association. (Chew on This: Crunching Ice Can Be Bad for Your Teeth. ) colgate.com, 19 July 2006.〕 Folk wisdom (and some early investigators) maintained that pica reflected an appetite to compensate for nutritional deficiencies, such as low iron or zinc. Some forms of pica (as in pregnant women who are iron deficient) can be treated by supplementing the nutrient.〔Gavin, Mary L., MD. (Pica. ) ''KidsHealth for Parents''. December 2007.〕 Later research has demonstrated that the substances ingested generally do not provide the mineral or nutrient in which patients are deficient. As the people start eating nonfoods, pica can also cause the nutritional deficiencies with which it is associated.〔 In one case study, pagophagia was reported to ''cause'' iron deficiency anemia. At the same time, however, the researchers suggested that chewing ice may benefit stomatitis and glossitis. The nutrients obtained from nonfoods such as soil or ice will vary widely depending on geographic location. For example, ice made from hard water will contain more minerals, especially calcium and magnesium, but simply drinking the water will provide the same minerals. == References == 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「pagophagia」の詳細全文を読む スポンサード リンク
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