HealthWise KnowledgeBase
Helicobacter Pylori Bacteria
Topic Overview
Helicobacter pylori is a type of bacteria
that is a major cause of stomach (gastric) and upper small intestine (duodenal)
Reference ulcers Opens New Window Reference 
Opens New Window. Infection with H. pylori may also increase the
risk of stomach cancer.
H. pylori bacteria can cause ulcers by
growing in the lining of the stomach, Reference producing inflammation Opens New Window Reference Opens New Window and causing the
stomach and intestinal lining to be more easily damaged by stomach acid. But most people
infected with H. pylori do not develop ulcers. An additional factor—one that cannot always be identified—may be
needed to cause an ulcer to form. Such factors may
include:
- The use of certain medicines, such as aspirin or other Reference nonsteroidal anti-inflammatory drugs (NSAIDs).
- Reference Excessive alcohol use Opens New Window.
- Other illnesses.
H. pylori bacteria can be eliminated by taking certain antibiotics that are specifically directed at this bacteria.
People who have had a peptic ulcer and are infected with H. pylori need treatment to cure the infection to lower their risk of getting another peptic ulcer. Treatment with a combination of medicines is highly successful at curing an H. pylori infection.Reference 1 Sometimes H. pylori bacteria are Reference resistant Opens New Window to certain antibiotics, which can keep the medicine from killing the bacteria.
For some people who have taken medicine to treat the H. pylori infection, a Reference follow-up test may be needed to make sure the infection is cured.
This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Reference Terms of Use. Reference How this information was developed to help you make better health decisions.
