> 2) Studies also show that vitamin D deficiency is related to many illness. Taking supplement protects against them. That's hardly a "rebuke". First, I'll not

> 2) Studies also show that vitamin D deficiency is related to many illness. Taking supplement protects against them. That's hardly a "rebuke". First, I'll note that you carefully used the word "related" instead of "causing" or "a major factor". Then again, you omitted "Studies show that..." from your second sentence, probably because there are no studies showing that people with Vitamin D deficiency, taking supplements, are doing any better than the ones that don't. In fact there is a meta-study, quoted by the article, that suggests they don't: https://www.thelancet.com/journals/landia/article/PIIS2213-8587(13)70165-7/fulltext https://www.thelancet.com/journals/landia/article/PIIS2213-8...