What role does Helicobacter play in fatigue?

Helicobacter pylori infection can contribute to fatigue indirectly through nutrient malabsorption. Chronic gastritis caused by H. pylori may lead to iron deficiency anemia or vitamin B12 deficiency, both of which are well-established causes of fatigue. Additionally, systemic low-grade inflammation from persistent infection might exacerbate tiredness via inflammatory cytokines. However, the evidence linking H. pylori directly to fatigue is moderate and mostly observational; many infected individuals remain asymptomatic. At-home microbiome or stool antigen tests can detect H. pylori but are not diagnostic for fatigue. If you have persistent fatigue along with digestive symptoms (bloating, epigastric pain), consult a physician for proper testing (urea breath test, endoscopy) and possible eradication therapy. Note: treating H. pylori may improve fatigue only if a deficiency or inflammation is present. The role of H. pylori in fatigue is plausible but not universally proven.