Some fruitarians who hold Judeo-Christian beliefs hold that fruitarianism was the original diet of humankind in the form of Adam and Eve, based on the Book of Genesis. They believe that a return to an Eden-like paradise will require simple living a health and diet.  Another common motivation is the desire to eliminate perceived toxicity within the body. For others, the appeal of a fruitarian diet comes from the challenge that the restrictive nature of this diet provides.