Nutritional risk of vitamin D, vitamin C, zinc, and selenium deficiency on risk and clinical outcomes of COVID-19: A narrative review.

The difference in the reduction of inflammatory markers [CRP, ferritin, Il-6, Lactate dehydrogenase (LDH) and Neutrophil/Lymphocyte (N/L)], between the two groups was highly significant (p < 0.01) with the reduction in VD group being markedly higher than the NVD group.

also in 132,142 other papers

In a crude analysis, initially including comorbidity burden as a potential confounder, vitamin D treatment was observed to be associated with a 43% and 55% reduction, respectively, in the odds ratio of the combined endpoint, but these effects did not reach statistical significance [ 100 ].

also in 111,027 other papers