STORY AT-A-GLANCE
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 D and COVID-19 infection and mortality- Those who took vitamin D2 supplements had a 28% lower risk of COVID-19 infection, while those taking vitamin D3 had a 20% lower risk
- Death from COVID-19 was also lower among those taking vitamin D — 33% lower among those taking vitamin D3 and 25% lower among those taking vitamin D2
- If the entire U.S. population in 2020 had supplemented with vitamin D3, it would have prevented 4 million COVID-19 cases and 116,000 deaths
- I strongly recommend getting your vitamin D from proper sun exposure if possible, as it will provide numerous other benefits, many of which are only beginning to be understood
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
In the video above, John Campbell, a retired nurse and teacher based in England, detailed the findings. The study involved a large population of veterans, including 220,265 patients supplemented with vitamin D3 before and during the pandemic, 34,710 supplemented with vitamin D2 and 407,860 untreated patients.5
Those who took vitamin D2 supplements had a 28% lower risk of COVID-19 infection, while those taking vitamin D3 had a 20% lower risk. Please note that vitamin D2 is a plant-based version of vitamin D and I do not recommend it. Death from COVID-19 was also lower among those taking vitamin D — 33% lower among those taking vitamin D3 and 25% lower among those taking vitamin D2.6
"These associated reductions in risk are substantial and justify more significant exploration and confirmation using RCTs [randomized controlled trials]," the researchers explained. "This is particularly important given the high rates of vitamin D deficiency in the U.S. population and COVID-19."7
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