Abstract The coronavirus disease 2019 (COVID-19) pandemic has led to a declaration of a
Public Health Emergency of International Concern by the World Health Organization. As of …

Introduction Vitamin D deficiency is an important public health problem worldwide. Vitamin D
deficiency confers a significant risk for both skeletal and non-skeletal disorders and a …

Research carried out during the past two-decades extended the understanding of actions of
vitamin D, from regulating calcium and phosphate absorption and bone metabolism to many …

Vitamin D deficiency (< 20 ng/mL) and insufficiency (20–29 ng/mL) are common among
patients with chronic kidney disease (CKD) or undergoing dialysis. In addition to nutritional …

The aim of this study is to determine the relationships of vitamin D with diabetes, insulin
resistance obesity, and metabolic syndrome. Intra cellular vitamin D receptors and the 1-α …

Background A large number of observational studies have reported harmful effects of low 25-
hydroxyvitamin D (25OHD) levels on non-skeletal outcomes. We performed a systematic …

Background Optimal vitamin D intake and its status are important not only for bone and
calcium-phosphate metabolism, but also for overall health and well-being. Vitamin D …

The most recent findings linking exposure to sun and vitamin D insufficiency to multiple
sclerosis (MS) are reviewed. Due to insufficient sunshine and changing lifestyles …

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 …

ABSTRACT Background The National Health and Nutrition Examination Surveys (NHANES)
continuously collected and publicly released data every two years. The latest data on …