Vitamin B12 – so -called. cobalamin or cyanocobalamin. This is the overall name of Korynoids containing cobalt. Korynooids are part of all cells in mammals and fulfill an important physiological role there.
In the past, various names were used for vitamin B12: anti -emission factor, hepatic factor, Castle's extraordinary factor etc.. These names were given as the role of vitamin B12 was learned in the body. The vitamin B12 deficit leads to anemia, changes in the cells of the gastrointestinal epithelium and disorders in nerve cell function. Vitamin B12, As mentioned above, participates together with folacin in the synthesis of nucleic acids.
Vitamin B12 occurs in plant products in very small quantities or not at all. In man, in providing this vitamin, the bacterial flora of the large intestine plays an important role. The absorption of vitamin B12 takes place in the presence of calcium ions. In Poland, the standard of demand for vitamin B12 was adopted in adults in quantity 5 mg per day. In recent years, a tendency to lower this norm has been marked in the world.