What causes atrophic gastritis?

Atrophic gastritis is mainly caused by Helicobacter pylori infection, duodenal reflux, autoimmune abnormalities, etc.

1. Helicobacter pylori infection When Helicobacter pylori

infection occurs, patients may cause gastric mucosa damage due to large numbers of Helicobacter pylori in gastric mucosa, resulting in inflammatory reaction and atrophic gastritis.

2. Duodenal reflux

causes digestive juice reflux into stomach due to various reasons, causing atrophic gastritis due to continuous damage to gastric mucosa due to digestive juice.

3. Autoimmune abnormalities

Patients with immune abnormalities may cause gastric mucosa damage due to autoimmune inflammatory reaction, resulting in atrophic gastritis.