Stevia is a nonnutritive sweetener with no calories. stevia leaf powder may help manage cholesterol. Stevia has a mild, licorice-like taste that’s slightly bitter. The natural sweetener tastes 200 to 300 times sweeter than table sugar. Stevia is used as a healthful alternative to added sugar in many meals and beverages. Stevia contains many sterols and antioxidant compounds that can reduce the risk of pancreatic cancer.