Gastroesophageal reflux disease (gerd) occurs when stomach acid frequently flows back into the tube connecting your mouth and stomach (esophagus) this backwash (acid reflux) can irritate the lining of your esophagus many people experience acid reflux from time to time. Gastroesophageal reflux disease effects on the body. Gastroesophageal reflux disease, or gerd, is a digestive disorder that affects the lower esophageal sphincter (les), the ring of muscle between the esophagus and stomachmany people, including.
gastroesophageal reflux disease effects on the body