Now, one of the many health benefits of passion fruit is that its seeds (one cup) contains almost 25 grams of fiber. Passion fruit seeds are a great source of fiber that the body needs to cleanse the colon, improve digestion, and help prevent heart attacks and strokes. Fiber attaches itself to the buildup found in the colon wall, pulls it out and makes the colon clean and clear from disturbances. This makes it easier for the body to digest food and in the long run, prevents the development of colon cancer.