Evidence check: Helicobacter in the context of Sport

Helicobacter pylori in the context of sport: H. pylori can impair iron absorption and cause gastritis, potentially reducing performance in endurance athletes. However, most infected individuals are asymptomatic. Evidence for a direct negative effect on athletic performance is weak and based on observational studies. Routine screening is not recommended unless symptoms like heartburn or unexplained fatigue are present. Caveat: Antibiotic treatment itself can temporarily disrupt gut microbiota and affect performance. Testing for H. pylori may be reasonable in cases of unexplained iron deficiency, but not as a general performance optimization tool.