How do different types of sugar affect blood sugar levels?
Sugars added to foods have no different effect on blood glucose from those of sugars alone. The natural sugars in fruit and fruit juices raise blood glucose approximately as much as sucrose and less than do most refined starchy carbohydrate foods. The optimum amount of sugars in the diet is not known.
Glycated Hemoglobin, HbA1c, Glycosylated Hemoglobin