Is CYP1A2 useful for Abnehmen?

Whether CYP1A2 is useful for weight loss is not straightforward. CYP1A2 is an enzyme primarily involved in caffeine metabolism. The common variant rs762551 (CYP1A2*1F) classifies individuals as fast or slow metabolizers. Some studies suggest that fast metabolizers may experience greater thermogenic and fat-oxidation benefits from caffeine, while slow metabolizers might see less benefit or even adverse effects like elevated blood pressure. However, the effects are small and highly variable. The evidence comes from observational and small intervention studies, not large randomized trials. Overall calorie balance, physical activity, and sleep are far more important. A CYP1A2 genetic test alone is not clinically actionable for weight loss and should not guide diet or supplementation decisions. The predictive value is limited, and isolated results can be misleading.