Papayas are a rich source of Vitamin C and good to smoothen your stomach, one of the healthiest fruit choices around and not to expensive!)
For More info see Nutritional Facts of Papaya

Researchers back cancer-fighting properties of papaya: AFP reports here at Yahoo News: MIAMI  – Researchers said Tuesday that papaya leaf extract and its tea have dramatic cancer-fighting properties against a broad range of tumors, backing a belief held in a number of folk traditions.