GERD (or Gastroesophageal Reflux Disease)

GERD (or Gastroesophageal Reflux Disease) is due to a backup of the stomach contents into the esophagus.

It is also known as acid reflux disease. There is a muscle, known as the lower esophageal sphincter (LES), which is located at the area where the esophagus (food pipe) connects to the stomach. This muscle normally keeps the stomach acid from entering into the esophagus.

Illustration of Gerd