Constipation and Gas
Bananas that are unripe can cause issues with your digestion. If you do not want to suffer from gas and constipation, opt for ripe fruits. Unripe bananas contain too much fiber and your body does not need the excess. Replace bananas with juicy fruits, plain water and fresh vegetables that contain less starch and carbs.

Allergies
Bananas may cause allergies. Make sure that you can eat this fruit. For instance, people who suffer from ragweed allergies are very likely to be allergic to bananas as well. The same symptoms may appear when you consume tomatoes, kiwi fruit, and avocados. Even potatoes and bell pepper may make you feel bad. Stay cautious and avoid the mentioned products.