Is DNA Stoffwechseltest useful for Langlebigkeit?

The short answer: DNA metabolism tests (e.g., for FTO, MC4R, TAS2R38) are not clinically useful for longevity. Evidence comes from GWAS and observational studies – effect sizes are tiny, ancestry-dependent, and not directly actionable. A FOXO3 variant (rs2764264) is associated with longevity, but the effect is small and the risk allele is common (63% in Europeans). Lifestyle factors (diet, exercise, sleep, stress management) have a far greater impact on healthy lifespan than individual gene variants. Moreover, no randomized controlled trials show that test-guided interventions improve longevity. These tests may serve as motivational tools at best, but not as reliable predictions or prescriptions. Caveat: No diagnostic value; no clinical validation for longevity. To positively influence lifespan, focus on evidence-based measures like a Mediterranean diet, regular physical activity, and avoiding smoking – not a DNA test.