Sugar provides calories and no other nutrients. There is a concern that sugar or caloric sweeteners can cause tooth decay. A high intake of sugar does not cause diabetes, but if a person is diagnosed with diabetes the amount of simple sugar eaten daily often needs to be reduced.

People have reported side effects from ingesting Aspartame, but this has not been proved through scientific studies.

Note: When speaking of nutrition, 1 Calorie = 1,000 calories or 1 kilocalorie (kcal).