How are CYP2C19 and longevity related?

The direct link between CYP2C19 and longevity is not scientifically established. CYP2C19 is a drug-metabolizing enzyme primarily known for its role in processing medications like clopidogrel, omeprazole, and certain antidepressants. Variants (*2, *3, *17) affect metabolic rate, which is clinically relevant for drug dosing. Some studies have found weak associations between CYP2C19 polymorphisms and age-related conditions such as cardiovascular events or cancer, but effects are small and inconsistent. Longevity is polygenic and heavily influenced by environment, lifestyle, and other genes. The evidence for a direct role of CYP2C19 is therefore unclear. A DNA test can provide insights into medication tolerance, but not life expectancy.