Acid Reflux Disease: The Truth On Why You Have Heartburn

Heartburn, or GERD – gastro-esophageal reflux disease as it is known, is caused by the coincidence of two medical conditions. The first condition contributing to acid reflux disease is the backward flow of food and acid from the stomach to the esophagus.

http://healthus.org/2010/12/acid-reflux-disease-the-truth-on-why-you-have-heartburn/