Non–Gastrointestinal Tract Associations of Helicobacter pylori Infection: What Is the Evidence?

Helicobacter pylori infection is linked to conditions of the upper gastrointestinal tract, including peptic ulcer and gastric adenocarcinoma. It has also been associated with a wide variety of non-gastrointestinal tract conditions. However, the evidence in support of H. pylori infection as a cause of the non-gastrointestinal tract conditions is not widely understood. We reviewed the medical literature for publications and abstracts dealing with …