Low Calorie but Not a Freebie: Get the Scoop On Sugar Alcohol

Sugar alcohols, or polyols, are carbohydrates that get their name from their chemical structure. Adding sweetness and texture to foods like sugar-free candy, gum and desserts, sugar alcohols contain fewer calories than regular sugar -- 2.6 calories versus 4 calories per gram – and do not contribute to tooth decay.

The body absorbs sugar alcohols slowly and incompletely, reducing their effect on blood sugar. This can be helpful for people with diabetes or those who are limiting caloric intake. Sugar alcohols do not cause dumping syndrome for people with gastric bypass, although their abnormal absorption can cause cramping, bloating and diarrhea when consumed in large quantities. Studies indicate that people can tolerate 10 to 15 grams of sugar alcohols per day without gastrointestinal distress, although some individuals can experience side effects from less.

It is important to remember that sugar alcohols are typically used in foods that have little nutritional benefit but still contain calories, such as desserts and snacks. Therefore, portion control remains very important for long-term, sustained weight loss.

Products containing sugar alcohols list the grams per serving on the nutrition fact label. The sugar alcohol content can also be found by looking for ingredients ending in “-tol,” such as sorbitol, mannitol and xylitol.