Vit C was thought to be helpful essentially based on the testimony of one biologist. All of the research shows that it has a minimal / marginal impact on welln

Vit C was thought to be helpful essentially based on the testimony of one biologist. All of the research shows that it has a minimal / marginal impact on wellness if you're getting a modest amount already. All of the research on Vit D suggests it has a much stronger impact on wellness than most supplements. I remember a list of "supplements proven to improve performance by studies" and it was basically steroids, creatine, and vitamin D; everything else was marginal or not backed by research.