Vitamin C (ascorbic acid) is a very powerful antioxidant. It is found in fresh fruits and vegetables. Studies suggests that it reduces the chances of Cancer. Vitamin C has been shown to reduce bladder tumors. It protect against esophagus, stomach and cervix Cancers. It works much better with vitamin E. Vitamin C protect the lung tissues and reduce the tobacco smoking effects on lungs. It enhance the immune system. Lemons, oranges, grape fruit and vegetables are good source of Vitamin C. Take vitamin C everyday to improve general health.