Respuesta :
Vitamin B12; is a nutrient that helps keep the body's nerve, and blood cells healthy, and helps make DNA, the genetic material in all cells. It also helps to prevent a type of anemia called megaloblastic anemia that makes people tired, and weak.
Function: Sources of new cells, especially red blood cells, healthy nerves and tissues activates folate.
Sources: Animal products, including lean meats, fish, poultry, eggs, cheese, fortified foods.
Toxicity - None known
Deficiency - Pernicious anemia, macrocytic, anemia, nerve damage as indicated by tingling and numbness in the hands and feet.
Hope that helps!!!!! : )