Can Vitamin D Help Protect against COVID?

 https://www.scientificamerican.com/article/can-vitamin-d-help-protect-against-covid/

 Given the results of Neale’s large-scale study and the modest benefits found in Martineau’s latest meta-analysis, it seems unlikely that vitamin D will prove to be a critical ingredient in fending off COVID-19 or modulating its severity. But these and other new trials may find it is useful in certain doses for certain populations. As Neale points out, “there is data that is suggestive” and enough smoke to indicate that you don’t want to be vitamin-D-deficient in a pandemic.