Diabetics are allowed to have sugar in small, manageable quantities, but they should generally limit drinking sugary beverages, according to the American Diabetes Association. Drinking sugary beverages is a common cause of weight gain and obesity, which are associated with developing type 2 diabetes.
Different types of carbohydrates have a stronger impact on the rate at which blood glucose rises, but diabetics need to manage the total amount rather than eliminate any specific type, explains the American Diabetes Association. Sugar can be substituted for other types of carbohydrates in the daily diet in order to stay on track. Sugar-based sweeteners are carbohydrates with calories and include table sugar, raw sugar, cane sugar, sugar cane syrup and brown sugar. Other forms of sugar include maple syrup, molasses, honey, fructose and high fructose corn syrup.