Question: what are the side effects of eating too much banana?
Answer: Constipation. Unripe bananas can cause constipation as they contain a lot of starch, which is tough for the body to digest well. ... 
Nutrient imbalance. Your body needs a balanced assortment of nutrients to function well. ... 
Excessive fiber may cause digestive problems. ... 
Sleepiness. ... 
Dental health problems. ... 
Barely contains fat.