I also wonder how much of the calcium deposits are due to the government pushing bovine mammary secretions (milk) and (easily oxidized) "healthy" vegetable oils in place of foods containing saturated fats and cholesterol.

I'm also a fair & freckled redhead and in addition to taking D3, eating a high fat diet with no limits on cholesterol has made my 60-something skin very supple, not dry nor easily burned like it was in my first 50 years. I too have gone ~8 yrs without sunscreen, though in the beginning of summer I do intentionally limit my first few outings to 20-30 minutes.

Vitamin D is fat soluble, so I suspect that much of the vit D in fortified skim milk and cereal in the SAD ended up being excreted rather than building healthy brains & skin.