Can CYP1A2 help with Müdigkeit?

CYP1A2 is an enzyme that primarily metabolizes caffeine in the liver. The rs762551 variant (CYP1A2*1F) classifies individuals as fast or slow caffeine metabolizers. Caffeine can temporarily reduce fatigue by blocking adenosine receptors. However, evidence that the CYP1A2 genotype alone has a clinically meaningful impact on general fatigue is weak. Fatigue is multifactorial – sleep quality, diet, stress, physical activity, and underlying medical conditions are far more influential. A DNA test can indicate how quickly you process caffeine, but it does not replace medical evaluation for chronic fatigue. Consumer genetic tests may overstate the significance of single SNPs. The evidence is mechanistic, not clinically validated. Safety note: Caffeine should not be used indiscriminately to combat fatigue, especially in individuals with sleep disorders or cardiovascular conditions.