GERD can be caused by low stomach acid.
Gastroesophageal reflux disease (GERD) is traditionally understood through an acid-centric model where excessive gastric acid or reflux causes mucosal injury, and treatments focus on acid suppression rather than low stomach acid.
The provided literature uniformly discusses GERD within the framework of excess gastric acid or reflux, treating it primarily with acid suppression therapies (such as PPIs or P-CABs). None of the papers support the hypothesis that GERD is caused by low stomach acid; instead, they operate on the standard medical consensus that gastric acid and reflux are key pathogenic factors. Therefore, the claim is refuted by the standard models and treatments evaluated in the literature.
Triadafilopoulos G. Lessons learned: use of 24-hour ambulatory esophageal and gastric pH monitoring and its implications for proton pump inhibitor use in cancer patients requiring oral oncologic therapies.. 2026. https://doi.org/10.1093/dote/doag073
This paper discusses GERD and utilizes proton pump inhibitors to control esophageal acid reflux, aligning with the acid-centric mechanism of the condition rather than low stomach acid as a cause.
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Zanoni A, Facchin S, Mari V, Bertin L, Savarino EV. Rethinking Long-Term PPI Therapy in GERD: A Narrative Review from a Microbial Ecology Perspective Beyond Acid Suppression.. 2026. https://doi.org/10.3390/ph19050705
This paper reviews GERD from an acid-centric model and notes that proton pump inhibitors remain the mainstay of therapy, contradicting the premise that low stomach acid causes the disorder.
Rogalidou M, Papadopoulou A. Balancing therapeutic benefits and hidden risks of proton pump inhibitors in pediatric practice: a narrative review and update.. 2026. https://doi.org/10.3345/cep.2025.02761
This review highlights that the primary treatment for GERD is the suppression of gastric acid via proton pump inhibitors, contradicting the claim that low acid causes GERD.
Kim GH, Joo DC, Lee MW, Lee BE. Zastaprazan, a Novel Potassium-Competitive Acid Blocker, for Acid-Related Disorders.. 2026. https://doi.org/10.3390/jcm15103700
This review confirms that acid-related disorders like GERD are treated with acid-suppressive therapy, which works on the underlying hyperacidity model rather than hypochlorhydria.
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