Low serum concentrations of 25-hydroxyvitamin D (25 [OH] D) have been associated with
many non-skeletal disorders. However, whether low 25 (OH) D is the cause or result of ill …

BackgroundThere is conflicting evidence about the relationship between vitamin D
deficiency and depression, and a systematic assessment of the literature has not been …

Beyond its critical function in calcium homeostasis, vitamin D has recently been found to
play an important role in the modulation of the immune/inflammation system via regulating …

Significant controversy has emerged over the last decade concerning the effects of vitamin D
on skeletal and nonskeletal tissues. The demonstration that the vitamin D receptor is …

In recent years, reports suggesting a resurgence of vitamin D deficiency in the Western
world, combined with various proposed health benefits for vitamin D supplementation, have …

Background Available evidence on the effects of vitamin D on mortality has been
inconclusive. In a recent systematic review, we found evidence that vitamin D 3 may …

Background Response of parathyroid hormone (PTH) to vitamin D supplementation is
determined by the baseline PTH level and change in vitamin D status. Conflicting reports in …

Background: Patients with chronic heart failure (HF) secondary to left ventricular systolic
dysfunction (LVSD) are frequently deficient in vitamin D. Low vitamin D levels are associated …

Cardiovascular diseases (CVDs) are the leading cause of morbidity and mortality. With the
ageing population, the prognostic determinants among others include frailty, health status …

BACKGROUND Vitamin D testing is increasing worldwide. Recently several diagnostic
manufacturers including Abbott and Siemens have launched automated 25-hydroxy vitamin …