dc.contributor.author | A.F. van der Mei, Ingrid | |
dc.contributor.author | Ponsonby, Anne-Louise | |
dc.contributor.author | Engelsen, Ola | |
dc.contributor.author | A. Pasco, Julie | |
dc.contributor.author | J. McGrath, John | |
dc.contributor.author | W. Eyles, Daryl | |
dc.contributor.author | Blizzard, Leigh | |
dc.contributor.author | Dwyer, Terence | |
dc.contributor.author | Lucas, Robyn | |
dc.contributor.author | Jones, Graeme | |
dc.date.accessioned | 2017-05-03T16:58:04Z | |
dc.date.available | 2017-05-03T16:58:04Z | |
dc.date.issued | 2007 | |
dc.date.modified | 2010-01-07T02:17:13Z | |
dc.identifier.issn | 00916765 | |
dc.identifier.doi | 10.1289/ehp.9937 | |
dc.identifier.uri | http://hdl.handle.net/10072/28088 | |
dc.description.abstract | Background 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.peerreviewed | Yes | |
dc.description.publicationstatus | Yes | |
dc.language | English | |
dc.language.iso | eng | |
dc.publisher | US Department of Health and Human Services | |
dc.publisher.place | USA | |
dc.relation.ispartofstudentpublication | N | |
dc.relation.ispartofpagefrom | 1132 | |
dc.relation.ispartofpageto | 1139 | |
dc.relation.ispartofissue | 8 | |
dc.relation.ispartofjournal | Environmental Health Perspectives | |
dc.relation.ispartofvolume | 115 | |
dc.rights.retention | Y | |
dc.subject.fieldofresearch | Public Health and Health Services not elsewhere classified | |
dc.subject.fieldofresearch | Environmental Sciences | |
dc.subject.fieldofresearch | Medical and Health Sciences | |
dc.subject.fieldofresearchcode | 111799 | |
dc.subject.fieldofresearchcode | 05 | |
dc.subject.fieldofresearchcode | 11 | |
dc.title | The high prevalence of vitamin D insufficiency across Australian populations is only partly explained by season and latitude | |
dc.type | Journal article | |
dc.type.description | C1 - Articles | |
dc.type.code | C - Journal Articles | |
gro.date.issued | 2007 | |
gro.hasfulltext | No Full Text | |
gro.griffith.author | McGrath, John J. | |