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 …

Introduction Inflammation is believed to be a contributing factor to many chronic diseases.
The influence of vitamin D deficiency on inflammation is being explored but studies have not …

Vitamin D is an essential nutrient for bone health and may influence the risks of respiratory
illness, adverse pregnancy outcomes, and chronic diseases of adulthood. Because many …

The purpose of studying the epidemiology of multiple sclerosis (MS) is twofold. First, it is
important to understand clearly the natural history of the illness in order to assist patients in …

Background Interpretation of parathyroid hormone (iPTH) requires knowledge of vitamin D
status that is influenced by season. Objective Characterize the temporal relationship …

Most of the population receive their nutritional vitamin D requirements through exposure to
solar ultraviolet (UV) radiation, with cutaneous synthesis estimated to provide 80–100% of …

Better understanding of the physiological role of the vitamin-D system, in particular its
potential effects on inflammatory and autoimmune conditions as well as on insulin secretion …

Irradiation of human skin with ultraviolet B (280–320 nm) initiates the photochemical
conversion of 7‐dehydrocholesterol via previtamin D3 to vitamin D3. Vitamin D3 needs for …

Background In recent years, the pleiotropic roles of vitamin D have been highlighted in
various diseases. However, the association between serum vitamin D and COPD is not well …

Recent compelling evidence suggests a role of vitamin D deficiency in the pathogenesis of
insulin resistance and insulin secretion derangements, with a consequent possible …