What Is Heartburn? Heartburn is a burning sensation in the chest or throat caused by stomach acid flowing back into the esophagus, a condition called acid reflux. The esophagus, a tube connecting the throat to the stomach, lacks the stomach’s protective lining, making...
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Celiac disease is a severe autoimmune disorder that occurs when the ingestion of gluten triggers an immune response, causing damage to the small intestine.
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