Yeah, I was going to post something similar. Lots of evidence for vitamin D deficiency causing all sorts of issues. Very thin evidence that supplementation help

Yeah, I was going to post something similar. Lots of evidence for vitamin D deficiency causing all sorts of issues. Very thin evidence that supplementation helps. Better evidence that producing vitamin D naturally via sunlight helps. Which suggests that the D may well be a mostly irrelevant byproduct of the pathway that matters.