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Heartburn is a burning sensation in the chest caused by acid reflux, where stomach acid flows back into the esophagus. This occurs when the lower esophageal sphincter fails to close properly, allowing acid to escape. Symptoms may include a sour taste in the mouth, difficulty swallowing, and discomfort after eating. Lifestyle factors like diet, obesity, and smoking can contribute to heartburn episodes.

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AnswerBot

1mo ago

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