Both 25-autoimmunity and (25 (OH) D: calcifediol) and its active form, 1, 25-dihydroxyvitamin
D (1, 25 (OH) 2D: calcitriol), play critical roles in protecting humans from invasive pathogens …

Vitamin D deficiency is associated with a higher risk of SARS-CoV-2 infection and poor
outcomes of the COVID-19 disease. However, a satisfactory mechanism explaining the …

Vitamin D is essential for life—its sufficiency improves metabolism, hormonal release,
immune functions, and maintaining health. Vitamin D deficiency increases the vulnerability …

Background In addition to the role of vitamin D in bone mineralization, calcium and
phosphate homeostasis, and skeletal health, evidence suggests an association between …

Vitamin D deficiency remains prevalent, with about 7% of the world's population living with
severe vitamin D deficiency and about one third with mild deficiency. We compare the …

The coronavirus disease 2019 (COVID-19) has already killed more than 6 million people
around the world. A growing body of epidemiological evidence suggests that low 25-hydroxy …

Hypovitaminosis D has been associated with worse outcome in respiratory tract infections,
with conflicting opinions regarding its role in Coronavirus-19 disease (COVID-19). Our study …

The immunomodulatory and metabolic effects of vitamin D receptor (VDR) activation have
been considered beneficial in mitigating the susceptibility and severity of COVID-19 …

Accumulating evidence supports the potential protective effects of vitamin D against chronic
diseases such as Alzheimer's disease, autoimmune diseases, cancers, cardiovascular …

Background To evaluate the association of preoperative vitamin D levels with postoperative
hypocalcaemia after total thyroidectomy. Methods The medical records of patients who …