Yes, yes, it’s not a mistake that I start the health alphabet with vitamin D3 and not with vitamin A 😉* The most important,* the most underrated* its deficiency causes serious diseases* and we usually have too little of this vitamin 🙁 Let’s start from scratch: What is this?Vitamin D, along with vitamins A, E and K, belongs to the group fat-soluble vitamins. She was discoveredonly in 1919 by Mellanbe, who for the first time the first to show that rickets could be caused by eficiencies in the diet of soluble substances in fats. Vitamin D can be supplied to the body in two ways – with food products or…