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Title: Urinary iodine concentrations indicate iodine deficiency in pregnant Thai women but iodine sufficiency in their school-aged children
Authors: Sueppong Gowachirapant
Pattanee Winichagoon
Laura Wyss
Bennan Tong
Jeannine Baumgartner
Alida Melse-Boonstra
Michael B. Zimmermann
Mahidol University
ETH Zurich
Wageningen University and Research Centre
Keywords: Medicine;Nursing
Issue Date: 1-Jun-2009
Citation: Journal of Nutrition. Vol.139, No.6 (2009), 1169-1172
Abstract: The median urinary iodine concentration (UI) in school-aged children is recommended for assessment of iodine nutrition in populations. If the median UI is adequate in school-aged children, it is usually assumed iodine intakes are also adequate in the remaining population, including pregnant women. But iodine requirements sharply increase during pregnancy. In this study, our aim was to measure UI in pairs of pregnant women and their school-aged children from the same family, who were sharing meals, to directly assess whether a household food basket that supplies adequate iodine to school-aged children also meets the needs of pregnant women. UI was measured in spot urine samples from pairs (n = 302) of healthy pregnant mothers and their school-aged children in metropolitan Bangkok, Thailand.Adietary questionnaire wascompleted. The UI [median (range)] in the pregnant women {108 (11-558) mg/L [0.85 (0.086-4.41) mmol/L]} were lower than those of their school-aged children {200 (25-835) μg/L [1.58 (0.20-6.52) mmol/L]} (P < 0.001), indicating optimal iodine status in the children but mild-to-moderate iodine deficiency in their pregnant mothers. The estimated iodine intakes in the 2 groups were in the range of 130-170mg/d. There was a modest positive correlation between UI in the pairs (r = 0.253; P < 0.01). A higher frequency of seafood meals was a significant predictor of UI in both groups, but household use of iodized salt wasnot. These data suggest the median UI in school-aged children should not be used as a surrogate for monitoring iodine status in pregnancy in central Thailand; pregnant women should be directly monitored. © 2009 American Society for Nutrition.
ISSN: 15416100
Appears in Collections:Scopus 2006-2010

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