Can *Helicobacter pylori* cause diarrhea?

In modern life, inadequate dietary health management often leads to gastrointestinal discomfort. For instance, individuals may experience gastric distress or diarrhea—conditions that not only impair daily life but may also jeopardize overall health. So, can Helicobacter pylori infection cause diarrhea?

Can Helicobacter pylori Cause Diarrhea?

Helicobacter pylori does not cause diarrhea. It is a spiral-shaped, microaerophilic bacterium capable of surviving under extremely harsh conditions. Primarily colonizing the gastric antrum, it damages the gastric mucosa and stimulates excessive gastric acid secretion. H. pylori weakens the gastric mucosal barrier, thereby contributing to the development of gastritis, gastric ulcers, and even serving as a risk factor for gastric cancer. In contrast, diarrhea is typically characterized by increased bowel movement frequency, loose or watery stools, and often accompanied by abdominal pain. It commonly results from intestinal infections or impaired digestive function.

Once H. pylori infection is confirmed, a structured eradication regimen is required. Diagnosis can be achieved via carbon-13 or carbon-14 urea breath tests, or through serological testing for H. pylori antibodies. Patients presenting with symptoms such as gastroesophageal reflux, belching, epigastric pain, or bloating may require upper gastrointestinal endoscopy, during which mucosal biopsies can be obtained for definitive diagnosis. Following confirmation, treatment typically involves either triple or quadruple therapy, tailored according to individual gastric pathology. Medication should always be administered under the guidance of a qualified physician.

If H. pylori infection is detected, prompt medical consultation and appropriate treatment are strongly recommended. We hope this information has been helpful. Wishing you optimal health and a joyful life!