Red banana, also known as red dacca banana is a great source of fiber. Fiber or roughage is an indigestible carbohydrate obtained from plants. Fiber rich food is essential for regular bowel movements. People with chronic bowel issues such as constipation, indigestion or gas are recommended to have red bananas. One red banana contains 4 grams of fiber, which meets 16% of the daily prerequisite of fiber. Eating red banana can control your weight and reduce the chances of heart disease and type 2 diabetes.