What causes acid reflux? When the same question is asked to different persons, the answers may vary to a great extent. It is so because there are various causes that trigger GERD disease. One of the obvious causes is the hiatus hernia or faulty valve. Due to the faulty valve, the acid produced in the stomach goes up through esophagus reaching to the back of the tongue making the patient feel bitter test. Many patients may feel heartburn if the symptoms increase.
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