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.