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- At Slightly Higher Risk
- • People with type A blood and achlorhydria (lack of stomach acid).
- • Males living in colder climates.
- • Those who have had part of the stomach removed because of peptic ulcers, leading to a decrease in stomach
- acids. There is a 6.5 percent incidence of tumors in the remaining stomach (gastric stump).
- • Older people whose stomach lining produces less acid as it ages (atrophic gastritis).
- • Peptic ulcer and atrophic gastritis associated with Helicobacter pylori infection (for carcinoma and
- lymphoma).
- • Slightly increased risk with alcohol or tobacco use.
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