Acid reflux, more formally known as gastroesophageal reflux disease (GERD), is a common condition in which the muscle at the top of the stomach does not operate properly, allowing stomach acids and partially-digested food to enter the esophagus.
The stomach has a thick lining designed to withstand the acids used to break down foods, but the esophagus, which is the tube that takes your food from your mouth to your stomach, has no such lining. If you have acid reflux, you are probably experiencing some or all of the following symptoms:
- Burning in the chest or throat (heartburn)