Natural history of Helicobacter pylori infection

Dig Liver Dis. 2008 Jul;40(7):490-6. doi: 10.1016/j.dld.2008.02.035. Epub 2008 Apr 18.


This report describes the modalities of chronic gastritis induced by Helicobacter pylori infection in different populations. The full gamut of lesions representing the precancerous cascade is very prevalent in populations of low socioeconomic background experiencing very high gastric cancer risk, as seen in the Latin American Andes Mountains. In populations of high socioeconomic standards and high cancer risk, such as Japan and Korea, the precancerous cascade predominates and "early" cancers are also diagnosed frequently. Some reports describe frequent corpus atrophy, not prominent in the former group. The so-called African enigma is seen in populations of low socioeconomic standards, usually living at low altitudes, with high prevalence of infection but low frequency of cancer and precancerous lesions. In populations in transition from high to low cancer risk, duodenal ulcer and antral non-atrophic gastritis are frequently seen. In affluent societies at low risk of cancer, such as Western Europe, Australia and North America, mild non-atrophic gastritis associated with low virulence Helicobacter pylori genotypes predominate. The varied phenotypes of gastritis may reflect secular changes in the ecology of our species.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Chronic Disease
  • Europe / epidemiology
  • Gastritis, Atrophic / epidemiology
  • Gastritis, Atrophic / microbiology*
  • Gastritis, Atrophic / pathology
  • Helicobacter Infections / epidemiology*
  • Helicobacter pylori* / pathogenicity
  • Humans
  • Italy / epidemiology
  • Japan / epidemiology
  • Korea / epidemiology
  • Latin America / epidemiology
  • North America / epidemiology
  • Precancerous Conditions / epidemiology*
  • Precancerous Conditions / microbiology*
  • Precancerous Conditions / pathology
  • Prevalence
  • Risk Factors
  • Socioeconomic Factors
  • Stomach Neoplasms / epidemiology*
  • Stomach Neoplasms / microbiology*
  • Stomach Neoplasms / pathology