So, this is a VERY small study so there's no real statistical power behind these numbers, BUT the correlation between Vitamin D deficiency and negative Covid symptoms/outcomes is really compelling. Vitamin D supplements are readily available, not that expensive, and there is little harm in taking them, so this along with your sage tea could help protect against adverse coronavirus symptoms.
Evidence from observational studies is accumulating, suggesting that the majority of deaths due to SARS-CoV-2 infections are statistically attributable to vitamin D insufficiency and could potentially be prevented by vitamin D supplementation. Given the dynamics of the COVID-19 pandemic, rational vitamin D supplementation whose safety has been proven in an extensive body of research should be promoted and initiated to limit the toll of the pandemic even before the final proof of efficacy in preventing COVID-19 deaths by randomized trials.
Evidence from observational studies is accumulating, suggesting that the majority of deaths due to SARS-CoV-2 infections are statistically attributable to vitamin D insufficiency and could potentially be prevented by vitamin D supplementation [...]
www.mdpi.com