Re: OT: Vitamin D levels chart

"Don't mix the Sun with hormonal D3 supplementation".

Why not?
As long as the overall levels of D are within the optimum range, you can do both.

Vitamin D is actually a prohormone.

Vitamin D's metabolic product, 1,25-dihydroxyvitamin D (calcitriol), is actually a "secosteroid hormone" that is the key which unlocks binding sites on the human genome. The human genome contains more than 2,700 binding sites for calcitriol; those binding sites are near genes involved in virtually every known major disease of humans.

Chrisb1.