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(1/4) Finally, the study I've been calling for since May: analysis of data from records of many people w/ both D & CV19 tests, in this case from Quest. n=191,779. Result is clear: lower COVID-19 infection risk as D levels rise, all the way to 55ng/ml. https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0239252
(2/4) Main figure speaks for itself. The relationship was still significant in a multivariate model accounting for all demographic factors. The relationship persisted across latitudes, races/ethnicities, both sexes, and age ranges.
(3/4) This study is 25x larger than any other study to date on the subject of risk of infection and should be considered the definite word on the subject until contradicted by a better study. This supercedes Hastie et al & Darling et al's UK Biobank studies & NICE + SACN reports.
(4/4) This solidifies low vitamin D as the most easily modified risk factor for COVID-19 infection backed by solid evidence. Especially considering the other evidence that the relationship is causal: see facts 2,6,7, & 9-11 of my 1-page evidence review: http://agingbiotech.info/vitamindcovid19facts
