The etiology of endemic rickets was discovered a century ago. Vitamin D is the precursor of
25-hydroxyvitamin D and other metabolites, including 1, 25 (OH) 2D, the ligand for the …

Vitamin D, a fat-soluble prohormone, has wide-ranging roles in the regulation of many
physiological processes through their interactions with the vitamin D receptors (VDR). It …

Objective To determine the effect of population level implementation of a test-and-treat
approach to correction of suboptimal vitamin D status (25-hydroxyvitamin D (25 (OH) D)< 75 …

Infections of the respiratory tract are more frequent in the winter months and especially in the
northern latitudes than they are in summer [1]. This obviously also applies to the COVID-19 …

Type 2 diabetes mellitus is a significant global health care problem, and pharmacotherapies
to treat the disease continue to emerge. However, the increasing burden of type 2 diabetes …

Background To our knowledge, no prospective study has examined the association between
vitamin D and cognitive decline or dementia. Methods We determined whether low levels of …

Methods: We performed a systematic review of English-language studies using MEDLINE
through February 2011. Longitudinal cohort studies reporting associations between vitamin …

Considering that the vitamin D receptor as well as the 1-α-hydroxylase enzyme that converts
25-hydroxyvitamin D (25 (OH) D) to its active form 1, 25-dihydroxyvitamin D have been …

Aims/hypothesis Epidemiological evidence is suggestive, but limited, for an association
between circulating 25-hydroxyvitamin D (25 [OH] D) and risk of type 2 diabetes. We …

Context: Serum 25-hydroxyvitamin D [25 (OH) D] concentration has been inversely
associated with the prevalence of metabolic syndrome (MetS), but the relationship between …