CYP2D6 is primarily a drug-metabolizing enzyme, involved in breaking down many common medications (e.g., antidepressants, beta-blockers, opioids). There is no strong evidence directly linking CYP2D6 variants to human longevity. Some GWAS have hinted at associations with metabolic pathways, but effect sizes are tiny and clinical significance is unclear. Longevity research focuses more on genes like APOE, FOXO3, and SIRT1. A DNA test for CYP2D6 can inform about your drug metabolism phenotype (poor, intermediate, extensive, or ultrarapid metabolizer), but it does not predict lifespan. Consumer tests often overstate such links. The evidence level is 'unclear' – mechanistic plausibility exists but human data are lacking. Do not change lifestyle or medication based solely on this SNP. Consult a healthcare professional for pharmacogenetic guidance.
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