Bananas are acceptable for people with type 2 diabetes due to their vitamin C, fiber and potassium content, states the American Diabetes Association. However, patients should carefully monitor carbohydrate intake from these fruits to maintain healthy blood glucose levels.
Research reveals that vitamin C may prove helpful to diabetics. Although there is insufficient data to support this claim as of 2015, vitamin C may lower blood sugar concentrations, according to the University of Maryland Medical Center.
The fiber in fruits such as bananas does not trigger a dangerous spike in blood sugar levels. This essential dietary component is not digested by the body and does not contribute to the carbohydrate intake of diabetic patients, even though fiber is classified as a type of carbohydrate, notes Joslin Diabetes Center. However, patients should consume bananas in moderation, as these fruits contain other forms of carbohydrates that may increase blood sugar levels.