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Selenium status in Southern Tasmania

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Jacobson, GA and Tong, YC and Townsend, AT and Featherstone, AM and Ball, MJ and Robertson, IK and Peterson, GM (2007) Selenium status in Southern Tasmania. European Journal of Clinical Nutrition, 61. pp. 1057-1063. ISSN 0954-3007

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Abstract

Objective: To assess the selenium status of Southern Tasmanians.

Design: Cross-sectional.

Settings: One thousand and five hundred adults randomly selected from the electoral roll living in the Greater Hobart region of Southern Tasmania, Australia, were invited to participate.

Subjects: The overall response rate was 22% (335/1500).

Interventions: A venous blood sample was collected and a questionnaire administered (consisting of brief demographic details and health questions) to subjects who granted informed consent. A previously validated assay using magnetic sector ICP-MS was employed for plasma analysis.

Results: Total plasma selenium levels for this sample population were normally distributed with a mean level of 110 g/l (range 67–268 g/l) indicating that the majority of the subjects were not selenium-depleted (71% with levels greater than 100 g/l). Adjustment for differential age/gender response rates produced similar values. More women under 50 (42%) and men over 50 (32%) had selenium levels <100 g/l with the potential for sub-optimal selenoprotein activity. Low education attainment was associated with low total selenium level (P<0.02).

Conclusions: The majority of participants were not deficient in selenium. Given the narrow therapeutic window of supplementation, dietary advice to increase foods rich in selenium, particularly to higher risk groups, may be an effective means of increasing plasma selenium toward target levels.

Sponsorship: This project was funded by the University of Tasmania and the Royal Hobart Hospital Research Foundation.

Item Type: Article
Keywords: selenium, Tasmania, population, plasma, depletion, deficiency
Journal or Publication Title: European Journal of Clinical Nutrition
Publisher: Nature Publishing Group
Page Range: pp. 1057-1063
ISSN: 0954-3007
Identification Number - DOI: 10.1038/sj.ejcn.1602628
Date Deposited: 07 Apr 2008 14:42
Last Modified: 18 Nov 2014 03:36
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