The truth about Vitamin D3 emerged about the same time as life itself

Vitamin D3 is essential to most life on this planet - without it, life as we know it and our own lives would not exist. To argue that life-giving and life-sustaining Vitamin D3 is somehow inherently harmless makes about as much sense as trying to argue that water is harmful and we shouldn't drink supplemental water.

The truth about Vitamin D3 emerged a long time ago - even before creatures emerged from the life-giving water and put down the first footsteps on the sands of time.  All you have to do to see that truth is look around you.  Without Vitamin D3 you would see nothing but barren rocks and sand.