What role does Fitness Vitality DNA play in fatigue?

The role of the Fitness Vitality DNA test in fatigue is not directly supported by the provided knowledge base. Such tests typically examine genetic variants linked to energy metabolism, mitochondrial function, or inflammation – e.g., FTO, BDNF, or TNF genes. However, effect sizes are small and clinical utility is limited. Fatigue is multifactorial (sleep, stress, nutrition, hormones, mental health). A DNA test cannot replace medical evaluation. Evidence for actionable fatigue guidance from genetics is weak; most claims are marketing-driven. Caveat: No validated prediction; risk of misinterpretation and unnecessary worry. For persistent fatigue, consult a physician for comprehensive blood work (thyroid, iron, vitamin levels).