No argument here Ralph.
Just hoping to improve peoples odds and health.
Many studies reference the absence of successful clinical trial and yet:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7456194/Of 50 patients treated with calcifediol, one required admission to the ICU (2%), while of 26 untreated patients, 13 required admission (50 %) p value X2 Fischer test p < 0.001. Univariate Risk Estimate Odds Ratio for ICU in patients with Calcifediol treatment versus without Calcifediol treatment: 0.02 (95 %CI 0.002−0.17). Multivariate Risk Estimate Odds Ratio for ICU in patients with Calcifediol treatment vs Without Calcifediol treatment ICU (adjusting by Hypertension and T2DM): 0.03 (95 %CI: 0.003-0.25). Of the patients treated with calcifediol, none died, and all were discharged, without complications. The 13 patients not treated with calcifediol, who were not admitted to the ICU, were discharged. Of the 13 patients admitted to the ICU, two died and the remaining 11 were discharged.
A small data set, but the results were very very significant and supported by huge numbers of studies showing a strong association as per Bradford Hill. If I got COVID and my symptom were severe, I would bet on it. As for the Canadian recommendation, that is the level that is sufficient to eliminate rickets and does not factor in other uses or sinks for Vitamin D.
I thinks its worth looking into and considering, especially as most of us a highly deficient at this time of year.