Purpose Vitamin D deficiency/insufficiency may increase the susceptibility to coronavirus
disease 2019 (COVID-19). We aimed to determine the association between vitamin D …

Introduction Vitamin D levels have been reported to be associated with COVID-19
susceptibility, severity, and mortality events. We performed a meta-analysis of randomized …

Background Increased vitamin D levels, as reflected by 25-hydroxy vitamin D (25OHD)
measurements, have been proposed to protect against COVID-19 based on in vitro …

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 …

The pathogenicity of the current coronavirus disease (COVID-19) shows postulates that
optimal status of essential nutrients is crucial in supporting both the early viraemic and later …

The novel coronavirus severe acute respiratory syndrome (SARS-CoV-2) has progressed
rapidly from an outbreak to a global pandemic, with new variants rapidly emerging …

Background: An increasing number of scientific journals have proposed a connection
between tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) and the severity of COVID …

Vitamin D deficiency is a global public health problem, a pandemic that commonly affects
the elderly and those with comorbidities such as obesity, diabetes, hypertension, respiratory …

Background: We aimed to establish an acute treatment protocol to increase serum vitamin D,
evaluate the effectiveness of vitamin D3 supplementation, and reveal the potential …

Psoriasis is a systemic, chronic, immune-mediated disease that affects approximately 2–3%
of the world's population. The etiology and pathophysiology of psoriasis are still unknown …