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Updated March 27, 2009

Definition: Achlorhydria is an absense of hydrochloric acid in stomach juice.

Causes of achlorhydria can include autoimmune disorders; use of H2 blockers or proton pump inhibitors; Helicobacter pylori (H. pylori) infection; radiation therapy involving the stomach; or gastric bypass procedures where the largest acid producing parts of the stomach are either removed or bound.

Pronunciation: AY-klor-HY-dree-uh
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