can tobacco cause heartburn GERD occurs when acidic stomach
GERD occurs when acidic stomach contents reflux back into the esophagus, irritating its lining. Normally, the lower esophageal sphincter (LES) works like a one way valve, preventing this backflow. When this valve weakens Understanding Heartburn: Causes and Symptoms Gastro Florida Cary Gastroenterology Associates What Causes Chronic Heartburn? Morning Heartburn: Causes, Relief, And Prevention
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