Papaya is a nutrient-rich fruit. Papaya contains significant amounts of fiber, folate, and vitamins A and C. It's also relatively low in calories, making it a good choice for those looking to lose weight.Add papaya to your morning smoothie, use it in a fruit salad for a snack or make a fruit salsa to serve beside fish or chicken.eople who consumed a low-fat diet high in fiber lost more weight than those consuming a diet high in fat and low in fiber, according to a study published in May 2006 in Diabetologia.. Each cup of papaya features 2.5 grams of fiber, or 10 percent of the daily value.