If only humans could make their own vitamin D. Oh, wait
The major natural source of vitamin D is synthesis of cholecalciferol in the lower layers of the epidermis of the skin, through a photochemical reaction of UVB light, from the sun exposure (specifically UVB radiation) or UVB lamps.
Player2@sopuli.xyz 1 year ago
Most of the useful things in milk are there because we artificially added them in. There is no real reason for this, it’s just what we have been doing for a long time