There were people, including Dr. Joseph Mercola, who were saying at the onset of Covid that Vitamin D was an excellent preventative. They were of course ignored, but now the studies are catching up. From Mercola at lewrockwell.com:
Optimizing your vitamin D level is a foundational element to lower your risk of COVID-19. This simple step will also help you ward off many types of viral infections, because vitamin D is an immunomodulatory agent.
This point — that vitamin D helps combat COVID-19 — was widely censored and deemed “misinformation” during the pandemic. But yet another study — this one published in Scientific Reports1 — shows the association between vitamin D and COVID-19 protection cannot be ignored.
About half the U.S. population has deficient levels of vitamin D, and rates of vitamin D deficiency are even higher in people with darker skin, those living in higher latitudes in the winter, nursing home residents and people with reduced sun exposure. Among groups with low levels of vitamin D, rates of COVID-19 are higher.2
Vitamin D Supplementation Reduces COVID-19 Infection, Death
Researchers from Johns Hopkins University, the University of Chicago and the Department of Veterans Health Affairs conducted a large-scale pharmacoepidemiologic study of the association between vitamin D3 and D2 supplementation and the probability of COVID-19 infection and mortality.3
“Vitamin D deficiency has long been associated with reduced immune function that can lead to viral infection. Several studies have shown that vitamin D deficiency … increases the risk of infection with COVID-19,” they wrote.4