What role does Nährstoffcheck play in Sport?

The MyBody-X DNA Nutrition Test analyzes genetic variants that modestly influence how your body processes nutrients like fats, carbs, and vitamins. For an endurance athlete, this might offer clues about whether a higher-fat or higher-carb diet suits your metabolism better. However, the effect sizes of these variants are small, and the evidence comes mostly from genome-wide association studies (GWAS), not from large randomized controlled trials. Therefore, the test can serve as a general guide but should not replace personalized advice from a sports dietitian or physician. Factors like total calorie intake, training load, hydration, and recovery are far more critical for performance. Caveat: No robust clinical trials show that DNA-guided diets outperform standard healthy eating for endurance athletes. Evidence grade: gwas/observational. Use the test as a curiosity, not a prescription.