You missed this from late August. Rct, calcifediol administered to hospitalized patients. Absolutely massive effect on ICU admission. There have been three RCT

You missed this from late August. Rct, calcifediol administered to hospitalized patients. Absolutely massive effect on ICU admission. There have been three RCT I know of. Another calcifediol study showed a big impact. An oral supplement study on hospitalized patients did not. Presumably because oral supplements take a while to change levels whereas calcifediol does not. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7456194/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7456194/