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Gastroesophageal Reflux Disease (GERD) is a long-term digestive disorder that occurs when stomach acid persistently flows back into the esophagus. This backwash, known as acid reflux, irritates the esophageal lining and leads to symptoms such as burning chest pain (heartburn), sour taste in the mouth, difficulty swallowing, and chronic cough. GERD develops when the lower esophageal sphincter (LES), a muscular valve between the stomach and esophagus, weakens or relaxes abnormally, allowing acid to escape upward.

Several factors contribute to GERD, including obesity, pregnancy, smoking, alcohol consumption, certain foods (like fatty or spicy meals), and hiatal hernia. If left untreated, GERD can cause serious complications such as esophagitis (inflammation), esophageal strictures (narrowing), ulcers, and Barrett’s esophagus, which increases the risk of esophageal cancer.

Management often involves lifestyle modifications such as eating smaller meals, avoiding trigger foods, elevating the head while sleeping, and maintaining a healthy weight. Medications like antacids, H2 blockers, and proton pump inhibitors (PPIs) are commonly prescribed to reduce acid production. In severe cases, surgical interventions such as fundoplication may be considered.

GERD is common worldwide, affecting millions of people, but with proper treatment and preventive measures, most individuals can control symptoms and reduce risks effectively.