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What is an H. pylori infection?

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A common kind of bacteria called Helicobacter pylori, or H. pylori, can cause an infection in your stomach that sometimes leads to ulcers. It also can raise your risk of stomach cancer. At least half the people in the world get it at some point, usually in childhood. Doctors aren't sure why it affects some people differently than others.

SOURCES:

Cleveland Clinic: "Helicobacter Pylori and Stomach Cancer."

Mayo Clinic: "H. pylori  infection."

University of Arizona Mel and Enid Zuckerman College of Public Health.

National Cancer Institute: "Helicobacter Pylori and Cancer."

CDC: "Helicobacter pylori."

KidsHealth.org: "Helicobacter pylori."

American Cancer Society: "Bacteria That Can Lead to Cancer."

Reviewed by Louise Chang on April 24, 2019

SOURCES:

Cleveland Clinic: "Helicobacter Pylori and Stomach Cancer."

Mayo Clinic: "H. pylori  infection."

University of Arizona Mel and Enid Zuckerman College of Public Health.

National Cancer Institute: "Helicobacter Pylori and Cancer."

CDC: "Helicobacter pylori."

KidsHealth.org: "Helicobacter pylori."

American Cancer Society: "Bacteria That Can Lead to Cancer."

Reviewed by Louise Chang on April 24, 2019

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How can you get an H. pylori infection?

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