What role does Leaky Gut Test play in Sport?

The role of a 'leaky gut' test in sports is not scientifically well-established. These tests typically measure markers like zonulin or LPS antibodies in stool or blood to assess intestinal permeability. In sports, it is hypothesized that intense exercise may impair the gut barrier and contribute to inflammation. However, current evidence is limited, with small and heterogeneous studies showing no consistent link between leaky gut markers and athletic performance or recovery. Most consumer tests lack clinical validation and are offered without medical supervision. A positive result alone does not justify major dietary changes or supplementation. A more evidence-based approach involves working with a sports medicine professional or dietitian to address specific gastrointestinal symptoms. Evidence grade: marketing/unclear. Caveat: No validated reference ranges for athletes; risk of misinterpretation and unnecessary expense.