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Acid Reflux or gastroesophageal reflux (GER) occurs when the stomach contents reflux or back up into the esophagus during or following a meal.
At the bottom of the esophagus, there is a ring of muscle called the lower esophageal sphincter (LES), which opens and closes to allow food to enter the stomach. Typically, the LES opens after meals to release gases. Sometimes when the LES opens, the stomach contents, including digestive juices or acids, reflux back up into the esophagus. This can lead to a burning sensation, or in the case of babies...