Banana contains more fructose, potassium and dietary fiber, which has a conditioning effect on the stomach, a laxative effect and can relieve constipation. Vinegar can promote metabolism, anti-aging, brown sugar blood does not contain iron, you can eat some properly, which is good for your health. But it is not recommended to eat the three together, especially vinegar and bananas, which have a stimulating effect on the stomach and easily cause gastrointestinal discomfort and even diarrhea, so it is best to eat these foods separately.