Can HLA-DQ2 help with Sport?

The short answer: There is no direct scientific evidence that HLA-DQ2 improves sports performance. HLA-DQ2 is a gene strongly associated with celiac disease – an autoimmune condition triggered by gluten. Carrying HLA-DQ2 increases your risk for celiac, but most carriers never develop symptoms. An indirect link to sport is plausible: in individuals with undiagnosed gluten sensitivity, symptoms like bloating, fatigue, and brain fog can impair training. A gluten-free diet might then boost energy and recovery. However, this is not a sports genetics marker per se. The evidence is weak and based on mechanistic reasoning, not controlled sport studies. Moreover, a genetic test alone cannot diagnose gluten intolerance – medical blood tests and possibly a biopsy are required. My advice: If you suspect gluten issues, seek medical evaluation before changing your diet. An HLA-DQ2 DNA test can be a clue, but it does not replace a diagnosis.