s . Vitamin A is important to the growth and repair of body tissues and helps maintain a smooth, soft, and disease free skin. It also helps protect the mucus membranes of the mouth, nose, throat, and lungs which reduces the chance of infection. Another function is helping mucus membranes combat the effects of air pollutants. Vitamin A also protects the soft lining of all the digestive tract. Another function of vitamin A is to aid in the secretion of gastric juices. The B complex vitamins have many known sub-types, but they all are water soluble vitamins. The B vitamins can be cultivated from a variety of bacteria, yeast, fungi, or molds . They are active in the body by helping the body convert carbohydrates into glucose, a form of sugar. B vitamins are also vital in the metabolism of proteins and fats. They are also the single most important element in the health of the nerves. B vitamins are also essential for the maintenance of the gastrointestinal tract, the health of the skin, hair, eyes, mouth, liver, and muscle tone. The intestine contain a bacteria that produces vitamin b but milk-free diets, and taking sulfonamides or antibiotics can destroy these bacteria . Whole grains contain high concentrations of B complex vitamins. Also, enriched bread and cereal products contain high concentrations of B vitamins due to a governmental intervention of the whole food group to ensure that the nation was getting enough B vitamins Vitamin C, also known as ascorbic acid, is a water soluble vitamin. It is sensitive to oxygen and is the least stable of all vitamins . One primary function of vitamin C is to maintain collagen, a protein necessary for the formation of skin, ligaments, and bones. Vitamin C also plays a role in healing of burns and wounds because it aids the formation of scar tissue. It also helps form red blood cells and prevent hemorrhaging. Another function is to prevent the disease, scurvy, which used to be seen in sailors becaus...
