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. Acid reflux foods definition. Acid reflux is a condition in which acid backs up from the stomach into the esophagus and even up to the throat, irritating their lining tissuesacid reflux can be aggravated by many different things, including lifestyle, medication, diet, pregnancy, weight gain, and certain medical conditions symptoms of acid reflux include heartburn, regurgitation of bitter acid into the throat, bitter.
acid reflux foods definition