Is Fitness | LifestyleCheck useful for Sport?

Whether a Fitness or Lifestyle genetic test is useful for sport cannot be answered with a simple yes. The provided context documents do not directly validate such tests for athletic performance. The FTO gene (e.g., rs9939609) is associated with a small BMI increase, but physical activity can attenuate this effect – this supports the benefit of exercise itself rather than genetic prediction. Other markers like rs1800497 (dopamine receptor) or MTHFR C677T have no proven relevance for sport. Evidence for personalized training or nutrition recommendations from DTC tests is weak; many tests lack clinical validation. A LifestyleCheck may offer rough hints but does not replace sports medical guidance. Without considering training status, diet, sleep, and individual goals, its utility remains questionable. Evidence grade: mixed/unclear.