Beta-carotene is also known as provitamin A because it can be converted into vitamin A within the body. Not only can beta-carotene be used to make vitamin A when needed, it is also a powerful antioxidant. Antioxidants are needed to protect the body from harm due to damaging compounds generated during our body's metabolism called free radicals.

Food sources of beta-carotene include yellow, orange and dark green vegetables and fruits such as carrots, squash and oranges.