NUTRITION

What Does Vitamin A Do?

What Does Vitamin A Do?. Part of the series: Nutrition & Vitamins. Vitamin A, found in both animal products as well as fruits and vegetables, helps to enhance eye health and vision as well as skin health, and it plays a major role in the health of the immune system. Discover how to ingest more vitamin A with healthy advice from a registered and licensed dietitian in this free video on nutrition.