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Contact SupplierThe most affected site of digestive tract is the lower esophageal sphincter; it is a muscular ring (sphincter) connecting the esophagus with stomach. The main function of the sphincter is to prevent food from moving out of the stomach and back into esophagus.
Gastroesophageal Reflux Disease ([GERD]/ heartburn) is very often used word to describe many digestive problems. Stomach acids reflux (or back up) from stomach into esophagus causes harsh, burning sensation in the area in between ribs or just below neck and may radiate through the chest and into neck and throat.
Reflux often occurs if the muscle where the esophagus meets the stomach doesn't close tight enough. A hiatal hernia aggravates GERD symptoms worse. It occurs when the stomach bulges through this opening into the chest.