Sufficient iodine status among Norwegian toddlers 18 months of age - cross-sectional data from the Little in Norway study

被引:10
作者
Aakre, Inger [1 ]
Markhus, Maria Wik [1 ]
Kjellevold, Marian [1 ]
Moe, Vibeke [2 ]
Smith, Lars [2 ]
Dahl, Lisbeth [1 ]
机构
[1] Inst Marine Res, Food Secur & Nutr, Bergen, Norway
[2] Univ Oslo, Dept Psychol, Oslo, Norway
关键词
Iodine; Urinary iodine concentration; Iodine intake; Dietary iodine intake; Toddlers; PREGNANT-WOMEN; ADEQUATE IODINE; DEFICIENCY; CHILDREN; INFANTS; RISK; NUTRITION; MOTHERS; GROWTH;
D O I
10.29219/fnr.v62.1443
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
Background: Inadequate iodine intake has been identified in several population groups in the Nordic countries over the past years; however, studies of iodine status in infants and toddlers are scarce. Objective: The aim of this study is to evaluate the iodine status and dietary iodine sources among 18-month-old toddlers from Norway. Methods: Cross-sectional and country representative data from the Little in Norway study were used. All children who had given a spot urine sample at 18 months age were included (n = 416). Urinary iodine concentration (UIC) was determined by inductively coupled plasma mass-spectrometry. Dietary habits and supplement use were measured by a food frequency questionnaire. Results: Median (25th-75th percentiles [p25-p75]) UIC was 129 (81-190) mu g/L while estimated median (p25-p75) habitual iodine intake was 109 (101-117) mu g/day. None of the children were below the estimated average requirement (EAR) of 65 mu g/day or above the upper intake level of 180 mu g/day. There were no differences in either UIC or estimated habitual iodine intake between different geographic areas in Norway. Milk was the most important iodine source, contributing an estimated 70% to the total iodine intake, while other foods rich in iodine such as seafood and enriched baby porridge contributed about 30%. Conclusions: The iodine status among 18-month-old toddlers from different geographic areas in Norway was sufficient, indicated by a median UIC above the WHO cutoff of 100 mu g/L. This was further supported by the estimated habitual iodine intake, where none of the participants were below the EAR. Milk was an important iodine source in this age group; thus children with a low intake might be at risk of insufficient iodine intake.
引用
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页数:9
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