Acid Reflux - What is Acid Reflux?

Acid reflux is the reflux or back flow of stomach contents (acids and juices) into the esophagus, the tube through which food passes into the stomach. Although it is commonly referred to as heartburn, acid reflux has nothing to do with the heart. People feel a burning sensation in the chest and upper abdomen due to the stomach acid that has refluxed into the esophagus. As a disease, acid reflux affects millions worldwide. The medical term for acid reflux disease is Gastro-Esophageal Reflux Disease (GERD).