Serious Data Issues at Play in a Randomized Trial of Vitamin D for Covid-19

A major trial of vitamin D treatment for Covid-19 has a number of flaws that make the results unreliable

Pictured: Probably fish oil, but that’s what you get when you search “supplement” on stock photo websites. Photo by Leohoho on Unsplash

One of the bigger questions throughout the pandemic has been whether vitamin D supplements are a useful tool in preventing and treating Covid-19. Since early 2020…