Evidence check: COMT in the context of Stress

COMT (catechol-O-methyltransferase) is a key enzyme in breaking down dopamine, norepinephrine, and epinephrine – neurotransmitters central to the stress response. The well-studied SNP rs4680 (Val158Met) alters enzyme activity: Val carriers have higher activity, Met carriers lower. Research suggests Met carriers may show greater cognitive decline under acute stress, while Val carriers might be more prone to anxiety under chronic stress. However, effect sizes are small and highly context-dependent (e.g., sex, environment, other genes). A single COMT test cannot predict your stress resilience; it is multifactorial. Consumer DNA tests like MyBody-X provide only a suggestive marker, not a clinical assessment. Evidence: human-moderate. Sources: none from provided context.