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Could someone explain how low hydrochloric acid in stomach causes heartburn?

5 doctors weighed in
Dr. Charles Cattano
Internal Medicine - Gastroenterology
4 doctors agree

In brief: Non-acid Heartburn

Heartburn is a symptom that develops when stomach contents reflux into esophagus.
Acid is a common cause of heartburn, but alkali, bile, regurgitated caustic ingestion, medications, food, pepsin, etc. Are all non-acid substances that can also irritate the esophagus & cause a "heartburn"-like presentation. Consider also delayed stomach emptying, stomach outlet narrowing, esophageal dysmotilities.

In brief: Non-acid Heartburn

Heartburn is a symptom that develops when stomach contents reflux into esophagus.
Acid is a common cause of heartburn, but alkali, bile, regurgitated caustic ingestion, medications, food, pepsin, etc. Are all non-acid substances that can also irritate the esophagus & cause a "heartburn"-like presentation. Consider also delayed stomach emptying, stomach outlet narrowing, esophageal dysmotilities.
Dr. Charles Cattano
Dr. Charles Cattano
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