What to watch with COMT and Abnehmen?

The COMT Val158Met variant (rs4680) affects the breakdown of dopamine and norepinephrine. Met carriers have higher baseline catecholamine levels, linked to increased stress sensitivity and potentially emotional eating. Val carriers clear catecholamines faster, which may enhance caffeine's stimulant effect – caffeine is sometimes used for appetite suppression. However, evidence for a direct impact on weight loss is weak: no robust RCTs show that COMT genotypes justify personalized diets or supplements (e.g., caffeine, green tea extract). Associations are mostly mechanistic or from observational studies. Moreover, COMT is often marketed as the 'warrior/worrier' gene, overstating its clinical relevance. For weight loss, calorie balance, exercise, and sleep are far more important than this single SNP. A DNA test can offer insights into stress reactivity, but not a specific weight-loss diet. Beware of exaggerated claims in direct-to-consumer marketing.