TY - JOUR
T1 - Does a high UV environment ensure adequate Vitamin D status?
AU - Kimlin, Michael
AU - Harrison, Simone
AU - Nowak, Madeleine
AU - Moore, Michael
AU - Brodie, Alison
AU - Lang, Carolyn
N1 - Funding Information:
The authors wish to acknowledge the funding of this research through a pilot study grant from Queensland Health, Population Health Branch. The authors also wish to thank all of the participants in this study, along with thanking the Australian Sun and Health Laboratory team members for their assistance with data collection. Simone Harrison and Madeleine Nowak each hold a research fellowship provided by the Queensland Cancer Fund.
PY - 2007/12/14
Y1 - 2007/12/14
N2 - This study assesses the Vitamin D status of 126 healthy free-living adults aged 18-87 years, in southeast Queensland, Australia (27°S) at the end of the 2006 winter. Participants provided blood samples for analysis of 25(OH)D (the measure of an individual's Vitamin D status), PTH, Calcium, Phosphate, and Albumin, completed a questionnaire on sun-protective/sun-exposure behaviours, and were assessed for phenotypic characteristics such as skin/hair/eye colour and BMI. We found that 10.2% of the participants had serum 25(OH)D levels below 25 nmol/l (considered deficient) and a further 32.3% had levels between 25 nmol/l and 50 nmol/l (considered insufficient). Our results show that low levels of 25(OH)D can occur in a substantial proportion of the population at the end of winter, even in a sunny climate. 25(OH)D levels were higher amongst those who spent more time in the sun and lower among obese participants (BMI > 30) than those who were not obese (BMI < 30). 25(OH)D levels were also lower in participants who had black hair, dark/olive skin, or brown eyes, when compared with participants who had brown or fair hair, fair skin, or blue/green eyes. No associations were found between 25(OH)D status and age, gender, smoking status, or the use of sunscreen.
AB - This study assesses the Vitamin D status of 126 healthy free-living adults aged 18-87 years, in southeast Queensland, Australia (27°S) at the end of the 2006 winter. Participants provided blood samples for analysis of 25(OH)D (the measure of an individual's Vitamin D status), PTH, Calcium, Phosphate, and Albumin, completed a questionnaire on sun-protective/sun-exposure behaviours, and were assessed for phenotypic characteristics such as skin/hair/eye colour and BMI. We found that 10.2% of the participants had serum 25(OH)D levels below 25 nmol/l (considered deficient) and a further 32.3% had levels between 25 nmol/l and 50 nmol/l (considered insufficient). Our results show that low levels of 25(OH)D can occur in a substantial proportion of the population at the end of winter, even in a sunny climate. 25(OH)D levels were higher amongst those who spent more time in the sun and lower among obese participants (BMI > 30) than those who were not obese (BMI < 30). 25(OH)D levels were also lower in participants who had black hair, dark/olive skin, or brown eyes, when compared with participants who had brown or fair hair, fair skin, or blue/green eyes. No associations were found between 25(OH)D status and age, gender, smoking status, or the use of sunscreen.
UR - http://www.scopus.com/inward/record.url?scp=36348967098&partnerID=8YFLogxK
U2 - 10.1016/j.jphotobiol.2007.09.008
DO - 10.1016/j.jphotobiol.2007.09.008
M3 - Article
C2 - 17964181
AN - SCOPUS:36348967098
SN - 1011-1344
VL - 89
SP - 139
EP - 147
JO - Journal of Photochemistry and Photobiology B: Biology
JF - Journal of Photochemistry and Photobiology B: Biology
IS - 2-3
ER -