Serum vitamin D levels in office workers in a subtropical climate

Vu, Lan H., Whiteman, David C., van der Pols, Jolieke C., Kimlin, Michael G. and Neale, Rachel E. (2011) Serum vitamin D levels in office workers in a subtropical climate. Photochemistry and Photobiology, 87 3: 714-720. doi:10.1111/j.1751-1097.2011.00899.x

Author Vu, Lan H.
Whiteman, David C.
van der Pols, Jolieke C.
Kimlin, Michael G.
Neale, Rachel E.
Title Serum vitamin D levels in office workers in a subtropical climate
Journal name Photochemistry and Photobiology   Check publisher's open access policy
ISSN 0031-8655
Publication date 2011-05-01
Year available 2011
Sub-type Article (original research)
DOI 10.1111/j.1751-1097.2011.00899.x
Open Access Status
Volume 87
Issue 3
Start page 714
End page 720
Total pages 7
Place of publication Hoboken, NJ United States
Publisher Wiley-Blackwell Publishing
Language eng
Formatted abstract
Vitamin D is necessary to maintain healthy bones, and may prevent other chronic diseases. There is limited information regarding the vitamin D status of people living in climates with relatively high ambient ultraviolet radiation. We therefore aimed to determine serum 25(OH)D levels in a group of office-workers in subtropical Australia. We collected blood from 129 office workers in summer (n = 129) and 175 in winter (91 in both seasons). Serum 25(OH)D was estimated using a commercial chemiluminescent immunoassay and we asked participants to complete questionnaires about sun exposure and diet for the month prior to blood collection. Summer and winter mean serum 25(OH)D was 74 (95% CI 70-77) nmol L -1 and 54 (95% CI 51-57) nmol L -1, respectively. In summer, 14% of participants were classed as "insufficient," compared with 51% in winter. High 25(OH)D levels in summer were associated with time spent outdoors in nonpeak UV periods, while in winter high levels were associated with intake of vitamin D from food or supplements. The high prevalence of vitamin D insufficiency observed in this population highlights the need for further examination of the relation between sunlight and vitamin D production to enable more accurate sun exposure recommendations.
Keyword D Deficiency
D Insufficiency
Older Women
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Public Health Publications
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