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 …

Ozone depletion leads to an increase in the ultraviolet-B (UV-B) component (280–315 nm)
of solar ultraviolet radiation (UVR) reaching the surface of the Earth with important …

Background: Increased awareness of the importance of vitamin D to health has led to
concerns about the prevalence of hypovitaminosis D in many parts of the world. Objectives …

Context: Lack of sun exposure is widely accepted as the primary cause of epidemic low
vitamin D status worldwide. However, some individuals with seemingly adequate UV …

Background A relationship between the latituderelated distribution of multiple sclerosis (MS)
and exposure to sunlight has long been considered. Higher sun exposure during early life …

Rickets, the state of vitamin D deficiency, has reemerged as a potential problem in the
United States. At the dawn of the 20th century, rickets was pervasive among infants residing …

Vitamin D is a secosteroid with an endocrine mechanism of action which is sequentially
synthesized in humans in the skin, liver and kidneys. The active hormone, 1α, 25 …

BACKGROUND AND AIM: In Crohn's disease (CD), epidemiological data and animal
studies suggest that vitamin D (vitD) has protective immune-modulating properties. 1, 25 …

The main purpose with this study was to assess the seasonal variation in measured UV-
radiation and its impact on vitamin D status throughout one year in subjects living at high …

Thoroughly revised and updated, Handbook of Vitamins highlights the recent research in
vitamins and gene expression, vitamin-dependent genes, and vitamin effect on DNA …