Citrus fruits and juices are full of vitamins and minerals essential to maintaining a healthy diet. The American Cancer Society, March of Dimes and American Heart Association have recognized the important role a balanced diet including citrus fruit and juices may play in helping to reduce the risk of certain cancers, neural tube birth defects and heart disease. Grapefruit, named for the way the fruit grows in clusters, like grapes, is only 300 years old. It is believe to have been produced in Jamaica by the accidental pollination of a fruit called pomelo, and an orange. Seeds were brought to The U.S. and Florida launched an industry based on its production. The cultivation of grapefruit spread to the Rio Grande Valley in Texas where another genetic event occurred, producing the popular deeply colored Ruby Red variety.