Vitamins are a group of substances essential for cellular function, growth and development normales.Imprescindibles in the metabolic processes that take place in the nutrition of living beings. Cinergy Health Do not bring energy, and not used as fuel, but without them the body is unable to take the constructive elements and energy supplied by food. There are 13 essential vitamins, which means that are necessary for the body to function and are as follows: Vitamin A Vitamin C Vitamin D Vitamin E Vitamin K Vitamin B1 (thiamine) Vitamin B2 (riboflavin) Vitamin B3 (niacin) Pantothenic acid Biotin Vitamin B6 Vitamin B12 Folate (folic acid) Vitamins are grouped into two categories: “Fat-soluble vitamins are stored in fatty tissue of the body. “Water-soluble vitamins that the body has to use immediately. Any excess water-soluble vitamin leave the body through urine.Vitamin B12 is the only water-soluble vitamin that can be stored in the liver for many years. FUNCTIONS Each vitamin has specific functions and one person may have health problems (deficiency disease) if they do not get enough of a particular vitamin. “The vitamin A helps form and maintain healthy teeth, bones, soft tissue, mucous membranes and skin. “The vitamin B6 also called pyridoxine. The more protein a person eats, the more vitamin B6 is needed to help the body use protein.Vitamin B6 helps, among other things, the red blood cell formation and maintenance of brain function. “The Vitamin B12 , like other B complex vitamins, is important in metabolism and also helps form red blood cells and maintenance of the central nervous system . “The vitamin C , also called ascorbic acid, is an antioxidant that promotes healthy teeth and gums healthy. It helps the body absorb iron and maintain healthy tissue and also promotes wound healing. “The vitamin D is also known as the “sunshine vitamin” because the body after exposure to sunlight. From 10 to 15 minutes of sun exposure three times a week is enough to produce the body’s requirement of vitamin. This vitamin promotes the absorption of calcium in the body, essential for the development and maintenance of healthy teeth and bones. It also helps maintain proper blood levels of calcium and phosphorus . “The vitamin E , also known as tocopherol, plays an important role in the formation of red blood cells and helps the body use vitamin K. “The vitamin K does not appear in the list of essential vitamins, but without it blood would not clot.