PEPTIC ULCERS

Important information regarding your health 

An ulcer caused by the deterioration of the lining of the stomach or the duodenum (the first part of the small intestine just below the stomach) is called a peptic ulcer. The leading causes of peptic ulcers are the bacteria Helicobacter pylori (H. pylori) and long-term use of nonsteroidal anti-inflammatory agents, such as aspirin and ibuprofen.

Peptic ulcers are quite common. About four million people in the United States are affected by peptic ulcers.1 H. pylori infection is common and infects people in childhood. How H. pylori is transmitted is not entirely understood. However, food that has not been properly washed or cooked and contaminated drinking water are two likely sources.

H. pylori causes peptic ulcers by damaging the protective mucous lining of the stomach and duodenum. The damage allows stomach acid to get through to the stomach lining beneath. Together, the stomach acid and H. pylori damage the lining of the stomach or duodenum and cause an ulcer.

However, most people infected with H. pylori never develop ulcers. Why the bacteria causes ulcers in some people and not in others is unknown. It is likely that development of ulcers depends on how the infected person’s immune system responds to the bacteria, the type (strain) of H. pylori present, and other factors researchers have yet to discover.