What does a COMT genotype mean for lifestyle?

The COMT genotype, particularly the Val158Met polymorphism, affects the activity of catechol-O-methyltransferase, an enzyme that breaks down dopamine in the prefrontal cortex. Carriers of the Val/Val variant have high enzyme activity and lower baseline dopamine, which may be linked to better stress resilience but reduced cognitive flexibility under pressure. Met/Met carriers have lower activity, higher dopamine, and may be more sensitive to stress and anxiety, yet show better memory performance in calm conditions. In lifestyle terms, Met/Met individuals might benefit from stress-reduction techniques like meditation or adaptogens, while Val/Val types may respond better to caffeine or high-intensity exercise. However, effect sizes are small, the evidence is mixed, and real-world relevance is often overstated. MyBody-X DNA tests can include COMT analysis, but results should not be the sole basis for lifestyle changes. Personalized adjustments require integrating genetics with environment, diet, and psychosocial factors.