Assault with intent to murder, maim, or disfigure, or commit a felony is punishable by up to two-and-a-half years in jail and a fine of up to $1,000 or up to ten years in prison. Assault by force or violence with intent to steal is punishable by up to ten years in prison.
Vitamin D comes from two sources. It is made in the skin through direct exposure to sunlight, and it comes from the diet. The body's ability to produce vitamin D from exposure to sunlight and to absorb calcium and vitamin D decreases with age. Getting enough vitamin D helps the body absorb calcium and also helps the kidneys break down and incorporate (resorb) calcium that would otherwise be excreted.
I will try to answer it as best I can based on known science about vitamins. The body can produce vitamin D in the skin. The body produces small amounts of Niacinamide/niacin (B3) in the Kyneurinine pathway.