Evidence check: CYP2C19 in the context of Langlebigkeit

CYP2C19 is a cytochrome P450 enzyme primarily involved in drug metabolism (e.g., clopidogrel, proton pump inhibitors). In the context of longevity, there is no strong evidence that CYP2C19 variants directly influence lifespan. Some studies have explored associations with age-related diseases or drug efficacy in older adults, but results are inconsistent and often population-specific. The evidence is best classified as unclear or mechanistic. Consumer DNA tests sometimes list CYP2C19 as a 'longevity gene,' which can be misleading because the effect size is small and not clinically actionable. For health optimization, focus on established factors like diet, exercise, and sleep rather than single gene variants. Be cautious of marketing claims that overstate the role of CYP2C19 in longevity.