rs4680 · Neurotransmitter Metabolism
COMT Val158Met determines how quickly your brain breaks down dopamine, norepinephrine, and estrogen. This single variant significantly influences stress response, cognitive performance, and pain sensitivity.
COMT (catechol-O-methyltransferase) is the primary enzyme for degrading catecholamines in the prefrontal cortex. The Val158Met polymorphism creates two distinct phenotypes: 'Warriors' (Val/Val) with fast dopamine clearance and higher stress tolerance, and 'Worriers' (Met/Met) with slow clearance, higher baseline cognition but lower stress tolerance. This is one of the most studied SNPs in behavioral genetics.
| Genotype | Status | What It Means |
|---|---|---|
| GG (Val/Val) | Warrior | Fast COMT activity. Higher stress resilience, lower baseline dopamine. May need stimulation for focus. |
| AG (Val/Met) | Intermediate | Balanced COMT activity. Moderate stress response and cognitive baseline. |
| AA (Met/Met) | Worrier | Slow COMT activity. Higher baseline cognition, enhanced focus under calm conditions. Lower stress tolerance. Greater pain sensitivity. |
Met/Met carriers benefit from stress management practices, magnesium, L-theanine, and avoiding excessive caffeine. Val/Val carriers may benefit from green tea (contains both caffeine and L-theanine). All carriers should be aware of COMT's role in estrogen metabolism — slow COMT may increase estrogen-related risks.
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