Xylitol is a natural sweetener that several health benefits for the mouth and has less than half the calories as regular sugar which makes it good for diabetics. This sugar alcohol is used as a naturally occurring sugar substitute found in the fibers of many fruits and vegetables, including various berries, corn husks, oats, and mushrooms. It can be extracted from corn fiber, birch, raspberries, plums, and corn. Xylitol is roughly as sweet as sucrose with only two-thirds the food energy.