Vitamin D deficiency and insufficiency are highly prevalent conditions worldwide due to
several factors, including poor sun exposure. Shift workers may be exposed to the risk of …

Background. Reported cases of vitamin D3 deficiency have been increasing in incidence
worldwide. Although there is a lack of consensus relating to optimal levels of vitamin D …

Background Vitamin D deficiency is prevalent worldwide, but some groups are at greater
risk. We aim to evaluate vitamin D levels in different occupations and identify groups …

Objective This study aimed to investigate the effect of vitamin D deficiency on metabolic
syndrome among shift workers. Methods This study included 207 756 workers who …

Objectives The aim of this study was to examine blood concentrations of 25-hydroxyvitamin
D (25OHD) and parathyroid hormone (PTH) among indoor, outdoor, permanent and rotating …

Objectives To assess the association between night work and 25-hydroxy vitamin D
(25OHD) levels, and to evaluate effect of potential risk factors on 25OHD levels. Material and …

Low levels of vitamin D are related to muscle weakness, poor balance, and higher risk of
falls, and can therefore have a major impact on performance and safety at work. Little …

Shift work has serious health impacts due to desynchronization of the circadian rhythm;
consequently, the workers have increased sleep disturbances. Another impact is working …

Little is known about the effect of working conditions on vitamin D status in Southeast Asia,
where vitamin D deficiency is common despite the presence of sunlight all year round in …

Study Objectives: Low serum vitamin D levels are known to be associated with working
conditions and poor sleep, but precedent studies on this issue were limited by the absence …