The lining of the stomach is usually protected from the damaging effects of stomach acid. ulcers can recur and become a chronic problem or can lead to a number of serious complications including bleeding, it is important to treat ulcers. When this protection fails, an ulcer forms. There are a few different ways this may happen.
Helicobacter pylori (H. pylori) — H. pylori, a type of bacteria, may be responsible for most ulcers. This organism weakens the protective coating of the stomach and first part of the intestine and allows damaging digestive juices to eat away at the sensitive lining below. As many as 20% of Americans over age 40 have H. pylori living in their digestive tract, but most do not develop ulcers.