Evidence check: NutriCare | INFINITY DNA-Test in the context of Müdigkeit

The NutriCare or INFINITY DNA test from MyBody-X is marketed for fatigue, but the scientific evidence is weak. These direct-to-consumer nutrigenetic tests analyze gene variants linked to nutrient metabolism or energy pathways (e.g., MTHFR, FTO, COMT). However, effect sizes are small, and clinical relevance for everyday fatigue is unproven. Fatigue has many causes: poor sleep, stress, iron deficiency, thyroid issues, depression, or chronic infections. A DNA test alone cannot diagnose these. Evidence for personalized supplement recommendations from such tests is mostly marketing or mechanistic. Without blood work (e.g., ferritin, vitamin D, B12) and medical evaluation, the utility is questionable. Bottom line: The test may offer lifestyle inspiration but does not replace clinical diagnostics. If you suffer from persistent fatigue, consult a doctor first.