How are HLA-DQ2 and Sport related?

HLA-DQ2 is a genetic marker strongly associated with celiac disease, an autoimmune condition triggered by gluten. There is no direct scientific evidence linking HLA-DQ2 to athletic performance or sports outcomes. However, undiagnosed celiac disease or gluten sensitivity can impair an athlete’s energy, digestion, and recovery. In that context, a positive HLA-DQ2 result might suggest a need for further medical evaluation (antibody tests, biopsy) before considering a gluten-free diet for performance reasons. The evidence base is limited to celiac risk assessment; direct sport-related studies are lacking. MyBody-X offers HLA-DQ testing, but results should not be used alone to guide sports nutrition. Many HLA-DQ2 carriers never develop celiac, and a negative result effectively rules out celiac. For asymptomatic athletes, the test is unlikely to provide meaningful performance insights. Evidence: human-observational (for celiac risk), direct sport link: unclear.