Myths vs facts: CYP2D6 and longevity

CYP2D6 is an enzyme involved in metabolizing many drugs and some endogenous compounds. Marketing often claims that certain variants are linked to longevity. However, the scientific evidence is weak. Some studies have found associations between CYP2D6 polymorphisms and risk for Parkinson's disease or certain cancers, but there are no robust data showing a direct effect on lifespan. Most findings come from association studies with small effect sizes and have not been replicated in prospective longevity cohorts. Moreover, the effect is confounded by environmental factors and other genes. Therefore, a direct-to-consumer CYP2D6 test cannot reliably predict your life expectancy. MyBody-X tests are marketed as lifestyle insights, not medical diagnostics. If you are concerned about drug metabolism or disease risk, consult a physician and consider a pharmacogenetic analysis in a certified laboratory.