Vitamin D deficiency has a high worldwide prevalence, but actions to improve this public
health problem are challenged by the heterogeneity of nutritional and clinical vitamin D …

The principal source of vitamin D in humans is its biosynthesis in the skin through a
chemical reaction dependent on sun exposure. In lesser amounts, the vitamin can be …

Numerous studies have shown that vitamin D deficiency is very common in modern societies
and is perceived as an important risk factor in the development of insulin resistance and …

As a consequence of epidemiological studies showing significant associations of vitamin D
deficiency with a variety of adverse extra-skeletal clinical outcomes including cardiovascular …

Recent evidence has revealed anti-inflammatory properties of vitamin D as well as extra-
skeletal activity. In this context, vitamin D seems to be involved in infections, autoimmune …

During the last two decades, the potential impact of vitamin D on the risk of cardiovascular
disease (CVD) has been rigorously studied. Data regarding the effect of vitamin D on CVD …

Although observational studies of health outcomes generally suggest beneficial effects with,
or following, higher serum 25-hydroxyvitamin D [25 (OH) D] concentrations, randomized …

Background Higher vitamin D status has been suggested to have beneficial effects on the
brain. Objectives To investigate the association between 25-hydroxyvitamin D [25 (OH) D] …

A significantly stronger impact in mortality and morbidity by COVID-19 has been observed in
the northern Italian regions compared to the southern ones. The reasons of this …

Background: Meta-analyses of randomized controlled trials have shown that vitamin D
supplementation reduces cancer mortality by 13%. Vitamin D fortification of foods may …