21. Onion
Raw onions are a healthful component in many cuisines and salads, but they can do more than make GERD sufferers cry. Because onions induce acid, they are a common cause of heartburn. Cooking the onions, on the other hand, can help put out the fire. Although shallots and green onions have a less onion flavor, they may still be GERD triggers. Try them in modest amounts and see how they go down. If your symptoms persist, add them to your list of foods to avoid if you have GERD.
