CYP1A2 is an enzyme primarily involved in metabolizing caffeine and certain drugs. Some studies suggest that genetic variants in CYP1A2 may influence caffeine tolerance, which could indirectly affect health outcomes such as cardiovascular disease or cancer risk. However, the evidence for a direct role in longevity is weak. Most associations come from observational studies and have not been robustly replicated. Moreover, individual gene variants typically have very small effects on lifespan. A CYP1A2 genetic test cannot provide reliable information about personal longevity. Lifestyle factors such as diet, exercise, and stress management have a far greater impact. The utility of such tests is limited and should not be mistaken for medical advice.
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