In 1982–84 Barry Marshall and Robin Warren linked a spiral gastric bacterium to gastritis, overturning acid-only ulcer dogma. They shared the 2005 Nobel Prize in Physiology or Medicine for the Helicobacter pylori and peptic-ulcer work.
South Korea historically had high seroprevalence that has declined with socioeconomic change and treatment programmes. Helicobacter pylori is a spiral bacterium that lives in the stomach mucus and rewrote the ulcer textbook in the 1980s.
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In 1982–84 Barry Marshall and Robin Warren linked a spiral gastric bacterium to gastritis, overturning acid-only ulcer dogma. They shared the 2005 Nobel Prize in Physiology or Medicine for the Helicobacter pylori and peptic-ulcer work.
South Korea historically had high seroprevalence that has declined with socioeconomic change and treatment programmes. Helicobacter pylori is a spiral bacterium that lives in the stomach mucus and rewrote the ulcer textbook in the 1980s.
Marshall and Warren's Nobel in 2005 recognized that many ulcers are an infection. Korea's historically high prevalence makes the story local as well as global. Spiral organisms in stomachs were sketched in the 19th century and then forgotten because they were 'un-culturable' and acid was the dogma.
Marshall's 1984 self-experiment is history. It is not a method this encyclopedia will repeat as instructions. Chronic gastritis can last decades. A smaller path leads toward atrophy and, in some people, cancer — population risk, not fate.
This is education from the atlas. It does not diagnose and does not prescribe a dose. It does not replace the full topic page.
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