Environmental and genetic determinants of vitamin D status among older adults in London, UK

DA Jolliffe, Y Hanifa, KD Witt, TR Venton… - The Journal of steroid …, 2016 - Elsevier
Despite the high prevalence of vitamin D deficiency among older adults in the UK, studies
investigating the determinants of vitamin D status in this group are lacking. We conducted a …

Food sources of vitamin D and their association with 25-hydroxyvitamin D status in Dutch older adults

AMM Vaes, EM Brouwer-Brolsma… - The Journal of steroid …, 2017 - Elsevier
Various populations are at increased risk of developing a low vitamin D status, in particular
older adults. Whereas sun exposure is considered the main source of vitamin D, especially …

Higher risk of vitamin D insufficiency/deficiency for rural than urban dwellers

TP Griffin, D Wall, L Blake, DG Griffin… - The Journal of steroid …, 2020 - Elsevier
There are many risk factors for Vitamin D deficiency. This study aimed to compare the
Vitamin D status and serum 25 (OH) D concentrations of adults living in an urban area to …

Relative importance of summer sun exposure, vitamin D intake, and genes to vitamin D status in Dutch older adults: The B-PROOF study

EM Brouwer-Brolsma, AMM Vaes… - The Journal of steroid …, 2016 - Elsevier
Background/objectives The prevalence of vitamin D deficiency among seniors is high.
Whereas sun exposure, vitamin D intake, genes, demographics, and lifestyle have been …

Vitamin D status: multifactorial contribution of environment, genes and other factors in healthy Australian adults across a latitude gradient

RM Lucas, AL Ponsonby, K Dear, PC Valery… - The Journal of steroid …, 2013 - Elsevier
Vitamin D deficiency is common and implicated in risk of several human diseases. Evidence
on the relative quantitative contribution of environmental, genetic and phenotypic factors to …

Serum 25-hydroxyvitamin D concentration and its determinants in the very old: the Newcastle 85+ Study

TR Hill, A Granic, K Davies, J Collerton… - Osteoporosis …, 2016 - Springer
Data on vitamin D status in very old adults are lacking. The aim of this study was to assess
25-hydroxyvitamin D [25 (OH) D] concentrations and its predictors in 775 adults aged 85 …

Associations with vitamin D deficiency in “at risk” Australians

K Brock, M Wilkinson, R Cook, S Lee… - The Journal of steroid …, 2004 - Elsevier
In a study of 185 elderly living in assisted care and 192 frail aged living in the community in
the Sydney metropolitan area, nursing home residents were found to be at a 3-fold and …

Ethnicity and social deprivation contribute to vitamin D deficiency in an urban UK population

KE Hayden, LN Sandle, JL Berry - The Journal of steroid biochemistry and …, 2015 - Elsevier
We receive a large number of 25 hydroxyvitamin D (25OHD) assay requests from General
Medical Practitioners (GPs) in primary care. We have investigated whether this rate of …

Effects of diet and exercise on plasma vitamin D (25 (OH) D) levels in Vietnamese immigrant elderly in Sydney, Australia

K Brock, R Cant, L Clemson, RS Mason… - The Journal of steroid …, 2007 - Elsevier
Vitamin D deficiency may be associated with osteoporosis and fractures in the elderly. In
Australia where there is a sizeable Vietnamese population, research has not yet clarified the …

Determinants of 25-hydroxyvitamin D in older Irish adults

K McCarroll, A Beirne, M Casey, H McNulty… - Age and …, 2015 - academic.oup.com
Background: vitamin D deficiency is prevalent in older adults living in Northern Europe and
is influenced by several factors which may vary significantly with age. Objective: we aimed to …