Show simple item record

dc.contributor.authorA.F. van der Mei, Ingrid
dc.contributor.authorPonsonby, Anne-Louise
dc.contributor.authorEngelsen, Ola
dc.contributor.authorA. Pasco, Julie
dc.contributor.authorJ. McGrath, John
dc.contributor.authorW. Eyles, Daryl
dc.contributor.authorBlizzard, Leigh
dc.contributor.authorDwyer, Terence
dc.contributor.authorLucas, Robyn
dc.contributor.authorJones, Graeme
dc.date.accessioned2017-05-03T16:58:04Z
dc.date.available2017-05-03T16:58:04Z
dc.date.issued2007
dc.date.modified2010-01-07T02:17:13Z
dc.identifier.issn00916765
dc.identifier.doi10.1289/ehp.9937
dc.identifier.urihttp://hdl.handle.net/10072/28088
dc.description.abstractBackground Inadequate sun exposure and dietary vitamin D intake can result in vitamin D insufficiency. However, limited data are available on actual vitamin D status and predictors in healthy individuals in different regions and by season. Methods We compared vitamin D status [25-hydroxyvitamin D; 25(OH)D] in people < 60 years of age using data from cross-sectional studies of three regions across Australia: southeast Queensland (27ӻ 167 females and 211 males), Geelong region (38ӻ 561 females), and Tasmania (43ӻ 432 females and 298 males). Results The prevalence of vitamin D insufficiency (= 50 nmol/L) in women in winter/spring was 40.5% in southeast Queensland, 37.4% in the Geelong region, and 67.3% in Tasmania. Season, simulated maximum daily duration of vitamin D synthesis, and vitamin D effective daily dose each explained around 14% of the variation in 25(OH)D. Although latitude explained only 3.9% of the variation, a decrease in average 25(OH)D of 1.0 (95% confidence interval, 0.7-1.3) nmol/L for every degree increase in latitude may be clinically relevant. In some months, we found a high insufficiency or even deficiency when sun exposure protection would be recommended on the basis of the simulated ultraviolet index. Conclusion Vitamin D insufficiency is common over a wide latitude range in Australia. Season appears to be more important than latitude, but both accounted for less than one-fifth of the variation in serum 25(OH)D levels, highlighting the importance of behavioral factors. Current sun exposure guidelines do not seem to fully prevent vitamin D insufficiency, and consideration should be given to their modification or to pursuing other means to achieve vitamin D adequacy.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherUS Department of Health and Human Services
dc.publisher.placeUSA
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom1132
dc.relation.ispartofpageto1139
dc.relation.ispartofissue8
dc.relation.ispartofjournalEnvironmental Health Perspectives
dc.relation.ispartofvolume115
dc.rights.retentionY
dc.subject.fieldofresearchPublic Health and Health Services not elsewhere classified
dc.subject.fieldofresearchEnvironmental Sciences
dc.subject.fieldofresearchMedical and Health Sciences
dc.subject.fieldofresearchcode111799
dc.subject.fieldofresearchcode05
dc.subject.fieldofresearchcode11
dc.titleThe high prevalence of vitamin D insufficiency across Australian populations is only partly explained by season and latitude
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.date.issued2007
gro.hasfulltextNo Full Text
gro.griffith.authorMcGrath, John J.


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record