Banana leaves contains large amounts of polyphenols that are natural antioxidants. These are found in many plant-based foods and green tea. Food served on the banana leaves absorbs the polyphenols which are said to prevent many lifestyle diseases. They are also said to have anti-bacterial properties that can possibly kill the germs in food.
It is always a good idea to eat on banana leaves as it is certainly more hygienic when compared to other utensils. Normal utensils have to be washed using soap and there are chances that traces of soap may still remain on the utensils even after washing. It also adds subtle and earthy flavors to the dishes that are served on the leaves.
Make a smart move and ditch those plastic disposable utensils for banana leaves as they are much more eco-friendly. Not only do they decompose in a very short time, which we all know most types of plastic do not, but they also save the extra time and effort that would have otherwise gone in washing the dishes. Chemical based dish washing soaps and liquids further enter the ground water and could harm the water table in the long run.