Vitamin D deficiency has become one of the most prevalent health problems in modern
society. However, there has been no study that has reported the trend of vitamin D status in …

Context: Vitamin D status in the Korean population has not been adequately determined.
Objective: To investigate the vitamin D status and the prevalence of vitamin D insufficiency in …

Vitamin D deficiency (VDD) is becoming an epidemic and thereby a global health problem.
Further, VDD adversely affects calcium metabolism and skeletal health, and is associated …

Purpose: Vitamin D deficiency is a global health problem that is associated with increased
risks of major diseases. This study investigated the status of 25-hydroxyvitamin D [25 (OH) …

ObjectiveWe aimed to assess the prevalence and associated factors of vitamin D deficiency
in healthy adolescents and to determine parent–adolescent association in vitamin D status …

Background-Vitamin D deficiency is a global health problem, but little is known about the
vitamin D status of Canadians.//Data and methods-The data are from the 2007 to 2009 …

Background There is growing evidence that vitamin D is related to the development of a
variety of diseases. The current study was performed to investigate the status of serum …

Background Vitamin D deficiency is documented as a common health problem in the world.
Limited data has been found on the prevalence of vitamin D deficiency in Beijing area. Aim …

Vitamin D is indispensable for the maintenance of bone and mineral health. Inadequate
vitamin D action increases the risk for various musculoskeletal/mineral events including …

Background The effects of age, gender, and seasonal variation on human levels of 25‐
hydroxyvitamin D (25 (OH) D) are not well understood. In this study, we aimed to investigate …