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Food sources of iodine in schoolchildren and relationship with 24-h urinary iodine excretion in Victoria, Australia
- Source :
- British Journal of Nutrition. 127:791-799
- Publication Year :
- 2021
- Publisher :
- Cambridge University Press (CUP), 2021.
-
Abstract
- Dietary recalls have been used previously to identify food sources of iodine in Australian schoolchildren. Dietary assessment can provide information on the relative contributions of individual food groups which can be related to a robust objective measure of daily intake (24-h urinary iodine excretion (UIE)). In Australia, the government has mandated the use of iodised salt in breadmaking to address iodine deficiency. The aim of this study was to determine the dietary intake and food sources of iodine to assess their contribution to iodine excretion (UIE) in a sample of Australian schoolchildren. In 2011–2013, UIE was assessed using a single 24-h urine sample and dietary intake was assessed using one 24-h dietary recall in a convenience sample of primary schoolchildren from schools in Victoria, Australia. Of the 454 children with a valid recall and urine sample, 55 % were male (average age 10·1 (1·3 (sd) years). Mean UIE and dietary iodine intake were 108 (sd 54) and 172 (sd 74) μg/d, respectively. Dietary assessment indicated that bread and milk were the main food sources of iodine, contributing 27 and 25 %, respectively, to dietary iodine. Milk but not bread intake was positively associated with UIE. Multiple regression (adjusted for school cluster, age and sex) indicated that for every 100 g increase in milk consumption, there was a 3 μg/d increase in UIE (β = 4·0 (se 0·9), P < 0·001). In conclusion, both bread and milk were important contributors to dietary iodine intake; however, consumption of bread was not associated with daily iodine excretion in this group of Australian schoolchildren.
- Subjects :
- Male
Victoria
Fortification
Medicine (miscellaneous)
chemistry.chemical_element
Iodine
Excretion
Food group
Environmental health
medicine
Animals
Humans
Sodium Chloride, Dietary
Child
Nutrition and Dietetics
business.industry
Bread
medicine.disease
Iodine deficiency
Diet
Iodised salt
Milk
chemistry
Dietary Iodine
Urinary iodine
business
Subjects
Details
- ISSN :
- 14752662 and 00071145
- Volume :
- 127
- Database :
- OpenAIRE
- Journal :
- British Journal of Nutrition
- Accession number :
- edsair.doi.dedup.....d275c6fbf653c1b5a25265123c1f8c44