What is acidity and what causes it?
What is acidity and what causes it?
Acidity is the irritation of the esophagus caused by the reflux of stomach acid.
The esophagus (the tube that connects the mouth to the stomach) has a tight band of muscles at the lower part (lower esophageal sphincter) that closes after food enters the stomach, preventing the stomach contents from flowing back into the esophagus. If the sphincter relaxes or weakens at the wrong time, stomach acid can flow back into the esophagus, causing acidity.
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