Myths vs facts: Longevity DNA Test and sleep

Myths vs. Facts: Longevity DNA Test and Sleep **Fact:** A longevity DNA test (e.g., MyBody-X) can analyze specific gene variants like rs2802292 in FOXO3, which has been associated with modestly increased lifespan in population studies. However, the effect size is small and not deterministic. **Myth:** The test can predict your actual lifespan or sleep quality. The evidence is primarily observational (GWAS) and insufficient for clinical predictions. Moreover, in Germany such tests fall under the Genetic Diagnostics Act (GenDG) – they are non-diagnostic and cannot replace medical advice. Sleep is influenced by many factors (e.g., vitamin D status, VDR genetics), but direct DNA-based sleep recommendations lack robust evidence. **Bottom line:** Use the results as lifestyle inspiration, not as medical guidance.