Vitamin A plays an essential role in vision, growth, immune function and reproduction. Deficiency can cause blindness, hair loss and skin problems. The document lists 20 foods high in vitamin A, such as beef liver, cod liver oil and cheese. It also lists 10 vegetables and 10 fruits high in provitamin A, which is converted to vitamin A, such as sweet potatoes, carrots and mangoes. Meeting vitamin A requirements involves regularly eating these foods with fat to aid absorption.