Peppermint is very low in calories, and the delicious flavor it adds to dishes lets you avoid using sugar, salt, or fat to make meals appealing. Peppermint has many health benefits. It can help treat indigestion, headaches, nausea, and painful or itchy skin. If you have a cold, it can soothe your sore throats and help eliminate a stuffy nose. You can use peppermint to freshen your breath as well. It's a common ingredient in gums, candies, and toothpaste.