what does Vitamin A do for the body
Vitamin A is necessary for eye health and vision. Vitamin A, a fat-soluble vitamin found as either preformed vitamin A or provitamin A carotenoids in the diet, plays an important role in the growth and development of several systems in the body.According to the Office of Dietary Supplements, preformed vitamin A commonly comes from animal sources, especially liver.Beta-carotene is the most common form of provitamin A carotenoid and is present in many dark orange fruits and vegetables.But unlike some water-soluble vitamins, such as vitamin C and the B vitamins, too much vitamin A can have an adverse effect on the body.lthough vitamin A's chief function involves the eyes and vision, it also plays important roles in the development of bones, including the teeth. In addition, vitamin A aids immune function and helps provide a barrier against infections of the skin, lungs and mouth.