Persimmons and bananas can be poisoned when eaten together, and there is no scientific proof at present. There is a difference between cold and heat between fruits, mainly because people with cold constitution should not eat much cold food. Persimmons are cold food, while bananas are laxative. If they are eaten at the same time, it is easy to cause diarrhea and abdominal pain, but if they are only eaten in a small amount, it will not have much to do with it. Therefore, eating bananas after eating persimmons will not cause food poisoning, but people with weak spleen and stomach should not eat them together, which is easy to cause diarrhea.
It is better to eat bananas 2 hours after eating persimmons. Generally speaking, a normal person's stomach can empty the food in 2 hours after eating, so there is no big problem to eat bananas again.
Bananas cannot be eaten with watermelons. Because bananas and watermelons are cold fruits, if they are eaten together, they will cause diarrhea.
Bananas can't be eaten with sweet potatoes. Because sweet potato contains dietary fiber, carotene, vitamins and other trace elements. Eating with bananas will lead to adverse biochemical reactions, which will easily lead to bloating, and it is also accompanied by the phenomenon of gastric acid reflux, so they should not be eaten together.