What in heavens name is banana fat? I have never heard such a thing. Bananas don't have fat. Do they? Well as far as I know they don't. But bananas are a very healthy and nutrition filled fruit. They have so many different minerals and vitamins. Bananas help immensely with digestion and other bodily functions. Bananas provide excellent energy and they are ideal for replenishing the body after working out. Bananas contain minerals such as potassium, iron, zinc and vitamin A. Eating a banana after dinner will help you perform well in the toilet. If you know what I mean.