What is a common cause of gastric ulcers?

Gastric ulcers, also known as peptic ulcers, are commonly caused by a bacterial infection from Helicobacter pylori (H. pylori). This bacterium can live in the acidic environment of the stomach and disrupt the mucous layer that protects the stomach lining from gastric acids. When the protective barrier is compromised, the stomach's acid can cause erosion of the lining, leading to ulcer formation.

In addition to H. pylori, other factors such as the prolonged use of nonsteroidal anti-inflammatory drugs (NSAIDs) and excessive alcohol consumption can also contribute to the development of gastric ulcers, but the presence of H. pylori is a primary and significant cause.

Dietary fiber deficiency, excessive exercise, and food allergies are not established causes of gastric ulcers. While they can influence general gastrointestinal health, they do not have the same direct impact on the development of ulcers as H. pylori does.