Vitamin D Insufficiency May Account for Almost Nine of Ten COVID-19 Deaths: Time to Act. Comment on: “Vitamin D Deficiency and Outcome of COVID-19 Patients”. by and Ben Schöttker

We’re told to follow the science. Okay, here’s real science: a substantial percentage of Covid patients are Vitamin D deficient, and the death count would be far lower if there had been mass Vitamin D supplementation. From Hermann Brenner and Ben Schöttker at

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.
We read, with great interest, the recent article by Radujkovic et al. that reported associations between vitamin D deficiency (25(OH)D < 12 ng/mL) or insufficiency (25(OH)D < 20 ng/mL) and death in a cohort of 185 consecutive symptomatic SARS-CoV-2-positive patients admitted to the Medical University Hospital Heidelberg, who were diagnosed and treated between 18 March and 18 June 2020 [1]. In this cohort, 118 patients (64%) had vitamin D insufficiency at recruitment (including 41 patients with vitamin D deficiency), and 16 patients died of the infection. With a covariate-adjusted relative risk of death of 11.3, mortality was much higher among vitamin D insufficient patients than among other patients. When translated to the proportion of deaths in the population that is statistically attributable to vitamin D insufficiency (“population attributable risk proportion”), a key measure of public health relevance of risk factors [2], these results imply that 87% of COVID-19 deaths may be statistically attributed to vitamin D insufficiency and could potentially be avoided by eliminating vitamin D insufficiency.

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