Vitamin D Supplements: Meh
“vitamin D supplementation on all-cause mortality was close to being statistically significant but didn’t reach the mark.”
I think the key is to stay out of vitamin D deficiency. Taking supplements when you are not deficient is fine but taking them when deficient is much more important.
The problem with studies on supplementation is that it is the level of 25ohd that matters. Supplementation leads towards that in a varying manner