>The link to Vit-D deficiency and worse covid outcomes is by now incredibly well-supported in the literature. Twitter followers I consider "in-the-know", as we

>The link to Vit-D deficiency and worse covid outcomes is by now incredibly well-supported in the literature. Twitter followers I consider "in-the-know", as well as a quick Google search, says this is nonsense. Where do you get that this assertion is well-supported?