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Functional dyspepsia and Helicobacter pylori infection: A recent consensus up to 1999

With accumulated evidence for a close relationship between Helicobacter pylori infection and many gastric disorders, the idea that this infection may invoke dyspeptic symptoms appears realistic. If curative therapy for H. pylori can bring about relief of symptoms in these patients, we would possess a new therapeutic tool for functional dyspepsia. Although there have been many clinical trials on this issue, the benefits of H. pylori treatment have been controversial. However, several large‐scale clinical studies have been very recently published, and suggest a specific direction on this clinical question. From these results, the current consensus is that H. pylori infection does not directly affect symptoms in patients with functional dyspepsia. However, most clinical trials have been performed on Western populations, and there are few reports from Asian countries. Our recent study on the Japanese population also supported the consensus, that is, a negative relationship between H. pylori infection and symptoms in functional dyspepsia patients.