Papaya leaves have as many if not more possible benefits as the fruit! Papaya leaves have been used to help support cancer treatments, kill bacteria, promote skin health and soothe the GI tract. Papaya leaves are also used as a natural laxative. Papaya leaves are often used in cosmetics and believed to help so the aging process. Papaya leaves contain antioxidants, vitamin-a, vitamin-C, vitamin-D, and acetogenin.