> A pill is not a viable replacement for sun exposure. The sun does more than help convert cholesterol into vitamin D. So much of the view of the human body is overly simplistic like this. "Oh, this activity/organ/thing does this beneficial thing. That must be all that it does, and we can replace that with this pill. Now you don't need that original thing anymore." Nope, there are lots of other things going on as well that you're ignorant of. Best to follow as much as possible the natural ways of doing things.