Promising studies suggest that naturally occurring substances in citrus fruits may have powerful cancer fighting properties. According to 101 Foods That Could Save Your Life by David Grotto, "In laboratory tests, citrus limonoids have been shown to fight cancers of the mouth, skin, lung, breast, stomach, and colon, and human neuroblastoma tumors, which occur most often in children. Next to cranberries, lemons exerted the highest antiproliferation activities on vitro human liver cancer cells. Because of limonoids' ability to stay in the bloodstream for an extended period of time, researchers believe that they may be better suited for suppressing cancer cell growth than other nutrients (In comparison, phenols in green tea typically stay in one's system for only four to six hours)."
