The First International Conference on Controversies in Vitamin D was held in Pisa, Italy, 14–
16 June 2017. The meeting's purpose was to address controversies in vitamin D research …

In recent years it has been shown that vitamin D deficiency is associated with an increased
incidence as well as the progression of a broad range of diseases including osteoporosis …

Context Vitamin D is classically recognized as a regulator of calcium and phosphorus
metabolism. Recent advances in the measurement of vitamin D metabolites, diagnosis of …

Retrospective studies showed a relationship between vitamin D status and COVID-19
severity and mortality, with an inverse relation between SARS-CoV-2 positivity and …

Observational studies from all over the world continue to find high prevalence rates of
vitamin D insufficiency and deficiency in many populations, including pregnant women …

Vitamin D deficiency and insufficiency has become a pandemic health problem with a
consequent increase of requests for determining circulating levels of 25-hydroxyvitamin D …

Vitamin D, an important hormone with a central role in calcium and phosphate homeostasis,
is required for bone and muscle development as well as preservation of musculoskeletal …

Low maternal vitamin D levels during pregnancy have been associated with a plethora of
adverse neonatal outcomes, including small for gestational age and preterm births …

The main role of vitamin D is to control mineral homeostasis. However, recent studies
suggested the existence of a number of extraskeletal effects. Among the latter, preclinical …

The current review provides an overview on the development of 25 (OH) D measurement
standardization tools over the last three decades and clarifies whether there is a role as a …