Sugar polyols, also known as sugar alcohols, are a type of low-calorie sweetener that are commonly used in food products as a sugar substitute. They are derived from natural sugars such as glucose, fructose, and sucrose, and are chemically similar to both sugars and alcohols, containing one hydroxyl group (−OH) attached to each carbon atom. Sugar polyols have a sweet taste, but are not fully absorbed by the body, which means that they provide fewer calories than sugar. They are also less likely to cause tooth decay than sugar, and have a lower glycemic index, which means that they have less of an impact on blood sugar levels. Some common types of sugar polyols include xylitol, erythritol, sorbitol, and mannitol. These sweeteners are used in a variety of food products, including chewing gum, candy, baked goods, and beverages.