Please read this open letter here from 100 influential doctors and scientists:
"Over 100 Scientists, Doctors, & Leading Authorities Call For Increased Vitamin D Use To Combat COVID-19: Scientific evidence indicates vitamin D reduces infections & deaths"
"Research shows low vitamin D levels almost certainly promote COVID-19 infections, hospitalizations, and deaths. Given its safety, we call for immediate widespread increased vitamin D intakes."
"Vitamin D modulates thousands of genes and many aspects of immune function, both innate and adaptive. The scientific evidence1 shows that:
-Higher vitamin D blood levels are associated with lower rates of SARS-CoV-2 infection.
-Higher D levels are associated with lower risk of a severe case (hospitalization, ICU, or death).
-Intervention studies (including RCTs) indicate that vitamin D can be a very effective treatment.
-Many papers reveal several biological mechanisms by which vitamin D influences COVID-19.
-Causal inference modeling, Hill’s criteria, the intervention studies & the biological mechanisms indicate that vitamin D’s influence on COVID-19 is very likely causal, not just correlation."
They suggest to take 2000 - 4000 iu per day, at least during the pandemic period, as the established RDA of 400 is based on a miscalculation that has never been corrected.
vitamind4all.org/letter.html?fbclid=IwAR2WV9vQhNwA67gXhy71V0JjgIdO-q2SOFA13MMvdiM9nIjZjICgzaJ4XWA