What can the Fitness | LifestyleCheck tell you — and what not?

The Fitness | LifestyleCheck from MyBody-X analyzes genetic variants related to sports, nutrition, and general health. It can provide insights into predispositions for muscle fiber type (e.g., ACTN3), endurance (PPARGC1A), nutrient needs (FUT2 for B12), or antioxidant capacity. The results are based on scientifically studied SNPs, but effect sizes are generally small and heavily influenced by environment, training, and diet. The test is not a diagnostic medical device – it cannot predict diseases or replace medical advice. Many markers have moderate evidence from observational studies or GWAS, but lack clinical validation for individual predictions. Results are also ancestry-dependent (e.g., European populations). What the test cannot do: predict actual performance, assess medical risk, or substitute for personalized coaching. Blog articles (e.g., on antioxidative effects) are informative but not clinical guidelines. In summary: the test offers personalized genetic insights, but its predictive power is limited – lifestyle and environment dominate.