To summarize, the review examined various studies that compared median serum vitamin D levels to factors such as COVID-19-positive cases, the severity of the infection, disease survivors, deaths, levels of inflammatory cytokines and markers such as C-reactive protein, and the number of days spent in the hospital.
Overall, the results reported no significant associations between vitamin D levels and COVID-19 severity, mortality, or hospitalization duration. Vitamin D deficiency seemed to be associated with the likelihood of being COVID-19 positive, but the nearly significant association decreased when examined at a larger scale.
Another one bites the dust.
Vitamin D supplements are good for a lot of things but apparently COVID prevention and cure isn’t one of them.