Banana stem is a rich source of fiber and helps in weight loss. Its high fiber content creates a feeling of satiation. It helps ease constipation. The banana stem is rich in potassium and vitamin B6 just like the fruit. The juice prepared using banana stems is excellent for people with diabetes because it does not contain sugar. You can have banana stem juice as a detox juice as well. Take a medium piece of a banana stem and a piece of ash gourd, grind it together and then squeeze the juice out of it using a cotton cloth. that's it! Your morning detox juice is ready.