Bananas have both soluble and insoluble fiber, so by eating them you will be able to get your daily dose of both. There are certainly a number of nutritional benefits to eating bananas, including the fact that they contain so much fiber. Those who are having problems with constipation will definitely want to think about eating more bananas on a regular basis.
Bananas also help to promote stabilized blood glucose levels because of all the fiber they have in them. A medium banana has around 3.1 grams of fiber in it which is a rather significant amount, especially when compared to the fiber content of other fruits.