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Issue 4, 2015
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Iodine status of Eeyou Istchee community members of northern Quebec, Canada, and potential sources

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Abstract

A multi community environment-and-health study among six of the nine communities of Eeyou Istchee in northern Quebec, Canada provided greater insight into iodine intake levels among these Cree First Nation communities. Using data from this large population-based study, descriptive statistics of measured urinary iodine concentrations (UICs) and iodine–creatinine ratios (stratified by age, sex, community of residence, and water consumption) were calculated, and the associations between independent variables and iodine concentration measures were examined through a general linear model. Traditional food consumption contributions were examined through Pearson partial correlation tests and linear regression analyses; and the importance of water sources through ANOVA. Generally speaking, urinary iodine levels of Eeyou Istchee community members were within the adequate range set out by the World Health Organization, though sex and community differences existed. However, men in one community were considered to be at risk of iodine deficiency. Older participants had significantly higher mean iodine–creatinine ratios than younger participants (15–39 years = 90.50 μmol mol−1; >39 years = 124.52 μmol mol−1), and consumption of beaver (Castor canadensis) meat, melted snow and ice, and bottled water were predictive of higher iodine excretion. It is concluded that using both urinary iodine indicators can be helpful in identifying subgroups at greater risk of iodine deficiency.

Graphical abstract: Iodine status of Eeyou Istchee community members of northern Quebec, Canada, and potential sources

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Supplementary files

Article information


Submitted
06 Dec 2014
Accepted
04 Mar 2015
First published
12 Mar 2015

Environ. Sci.: Processes Impacts, 2015,17, 844-853
Article type
Paper

Iodine status of Eeyou Istchee community members of northern Quebec, Canada, and potential sources

B. Tam, L. J. S. Tsuji, I. D. Martin, E. N. Liberda, P. Ayotte, S. Coté, É. Dewailly and E. Nieboer, Environ. Sci.: Processes Impacts, 2015, 17, 844
DOI: 10.1039/C4EM00674G

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