Definition:
Beta carotene is a vitamin found in certain foods, especially those that are bright yellow, orange or dark green. In the body, beta carotene is converted to a form of vitamin A known as retinol. A diet high in foods rich in beta-carotene is thought to lower the risk of lung cancer.
On the other side of the equation, supplements of beta carotene given to smokers are associated with a greater risk of developing lung cancer.
Further Reading:
Examples:
Lloyd's father died from lung cancer, so he is careful to add foods rich in beta carotene, such as carrots and sweet potatoes, to his diet. His doctor told him that studies showed that using supplements instead of food sources of beta carotene was actually associated with a higher risk of developing lung cancer.
