Vitamin B12 (also called cobalamin, because it contains cobalt) is a water-soluble vitamin essential for the normal functioning of the brain, the nervous system and for the formation of blood and various proteins. It is one of the 8 vitamins of group B.
It is normally involved in the metabolism of human body cells, especially in the synthesis and regulation of DNA, as well as in the metabolism of amino acids, fatty acids and carbohydrates.
- It relieves muscle aches, eczema and dermatitis, and also helps fight depression and drowsiness.
- Often this vitamin is recommended to strengthen nails and skin.
- The main sources of the vitamin are foods of animal origin (mainly viscera), milk and derivatives, as well as additional 50% yeast from the intestinal microflora.
- Biotin supplements are often recommended as a natural product to counteract the problem of hair loss in both children and adults. The signs and symptoms of biotin deficiency include hair loss, which progresses to severity when it includes loss of eyelashes and eyebrows. Some shampoos available contain biotin but it is doubtful if they exert any beneficial effect, since biotin is not absorbed through the skin.