What is the chemical that refluxes into the esophagus, causing the burning pain of GERD?

1 Answer
glerp
Aug 17, 2017

Stomach acid, or stomach contents.

Explanation:

Food in the stomach is mixed with acidic stomach juices to break it down (called chyme). The pH of this is usually very low (acidic), around 2. This liquid sometimes refluxes back into the esophagus and creates the burning sensation.

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