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Marginal selenium status in northern Tasmania

Citation

Beckett, JM and Ball, MJ, Marginal selenium status in northern Tasmania, The British Journal of Nutrition: An International Journal of Nutritional Science, 106, (5) pp. 718-724. ISSN 0007-1145 (2011) [Refereed Article]


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Copyright Statement

Copyright 2011 Cambridge University Press

DOI: doi:10.1017/S0007114511000687

Abstract

Se plays many important roles in humans. Marginal Se status has been associated with adverse health effects including an increased risk of chronic disease such as cancer. There are few Australian data, but the population of Tasmania, Australia, is potentially at risk of marginal Se status. A cross-sectional study of 498 men and women aged 2584 years was undertaken to assess the Se status of the northern Tasmanian population. Se status was assessed using dietary estimates and measures of serum Se and glutathione peroxidase (GPx). Mean Se intakes were 774 (sd 313) and 651 (sd 237) g/d for men and women, respectively; 27 % of the subjects consumed less than the Australian/New Zealand estimated average requirement. Mean serum Se concentration was 891 (sd 151) g/l; 83 % of the study subjects had serum Se concentrations below 100 g/l and 60 % had serum Se concentration below 90 g/l, suggesting that Se status in many subjects was inadequate for maximal GPx activity. This was supported by the positive association between serum Se and serum GPx (P < 0001), indicating that enzyme activity was limited by Se concentrations. The lowest mean serum Se concentrations were observed in the oldest age ranges; however, the prevalence of marginal Se status was similar across age ranges and did not appear to be influenced by sex or socio-economic status. The prevalence of marginal Se status was high in all sex and age subgroups, suggesting that the northern Tasmanian population could benefit from increasing Se intakes.

Item Details

Item Type:Refereed Article
Research Division:Medical and Health Sciences
Research Group:Nutrition and Dietetics
Research Field:Nutrition and Dietetics not elsewhere classified
Objective Division:Health
Objective Group:Public Health (excl. Specific Population Health)
Objective Field:Nutrition
UTAS Author:Beckett, JM (Dr Jeff Beckett)
UTAS Author:Ball, MJ (Professor Madeleine Ball)
ID Code:69606
Year Published:2011
Web of Science® Times Cited:6
Deposited By:Health Sciences A
Deposited On:2011-05-04
Last Modified:2012-06-26
Downloads:0

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