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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 25–84 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 77·4 (sd 31·3) and 65·1 (sd 23·7) ìg/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 89·1 (sd 15·1) ìg/l; 83 % of the study subjects had serum Se concentrations below 100 ìg/l and 60 % had serum Se concentration below 90 ìg/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 < 0·001), 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: | Biomedical and Clinical 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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