Β12, also known as cobalamin, is a water-soluble vitamin essential for various bodily functions. It plays a crucial role in the formation of red blood cells, DNA synthesis, and maintaining the health of nerve cells. A deficiency in Β12 can lead to anemia and neurological issues. This vitamin is primarily found in animal products such as meat, fish, eggs, and dairy. Vegetarians and vegans may need to consider supplements or fortified foods to ensure adequate intake, as plant-based sources of Β12 are limited. Regular monitoring of Β12 levels is important for overall health.