warum bin ich so müde test — can a DNA test help?

A DNA test can offer limited help for fatigue. Chronic tiredness is usually multifactorial: poor sleep, stress, nutrient deficiencies (iron, vitamin D, B12), thyroid issues, infections, or mental health. Genetic tests analyze variants in genes like MTHFR (folate metabolism), CYP3A4 (drug metabolism), or FTO (weight regulation). These may provide clues – e.g., whether methylation is slowed or how you process certain medications – but they rarely explain fatigue on their own. Effect sizes are typically small (e.g., FTO rs9939609: ~0.3 kg/m² BMI per allele). A DNA test is not a diagnostic tool for fatigue. Medical workup with blood work, hormone panel, and sleep assessment is far more important. MyBody-X offers comprehensive analyses (including microbiome), but evidence for direct causation between single gene variants and fatigue is weak to moderate. Marketing often overstates the power. Bottom line: DNA test as a complementary puzzle piece, not the answer.