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Food Group Intakes as Determinants of Iodine Status among US Adult Population

Title
Food Group Intakes as Determinants of Iodine Status among US Adult Population
Authors
Lee, Kyung WonShin, DayeonCho, Mi SookSong, Won O.
Ewha Authors
조미숙
SCOPUS Author ID
조미숙scopus
Issue Date
2016
Journal Title
NUTRIENTS
ISSN
2072-6643JCR Link
Citation
vol. 8, no. 6
Keywords
iodine statusurinary iodine concentrationfood group intakeNational Health and Nutrition Examination Survey
Publisher
MDPI AG
Indexed
SCIE; SCOPUS WOS scopus
Abstract
Adequate intake of iodine is essential for proper thyroid function. Although dietary reference intakes for iodine have been established, iodine intake cannot be estimated due to the lack of data on iodine contents in foods. We aimed to determine if food group intakes can predict iodine status assessed by urinary iodine concentration (UIC) from spot urine samples of 5967 US adults in the National Health and Nutrition Examination Survey (NHANES) 2007-2012. From an in-person 24-h dietary recall, all foods consumed were aggregated into 12 main food groups using the individual food code of the US Department of Agriculture (USDA); dairy products, meat/poultry, fish/seaweed, eggs, legumes/nuts/seeds, breads, other grain products, fruits, vegetables, fats/oils, sugars/sweets, and beverages. Chi-square test, Spearman correlation, and multiple linear regression analyses were conducted to investigate the predictability of food group intakes in iodine status assessed by UIC. From the multiple linear regressions, the consumption of dairy products, eggs, and breads, and iodine-containing supplement use were positively associated with UIC, whereas beverage consumption was negatively associated with UIC. Among various food group intakes, dairy product intake was the most important determinant of iodine status in both US men and women. Subpopulation groups with a high risk of iodine deficiency may need nutritional education regarding the consumption of dairy products, eggs, and breads to maintain an adequate iodine status. Efforts toward a better understanding of iodine content in each food and a continued monitoring of iodine status within US adults are both warranted.
DOI
10.3390/nu8060325
Appears in Collections:
신산업융합대학 > 식품영양학과 > Journal papers
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