A sugar substitute is a food additive that provides a sweet taste similar to that of sugar but with fewer calories or none at all. Common types of sugar substitutes include artificial sweeteners like aspartame and sucralose, as well as natural options like stevia and erythritol. These substitutes are often used in various products, including soft drinks, baked goods, and desserts, to help reduce sugar intake. Many people choose sugar substitutes for health reasons, such as managing diabetes or reducing overall calorie consumption. While they can be beneficial, it's important to use them in moderation, as some individuals may experience side effects or have sensitivities to certain sweeteners.