Myths vs facts: VKORC1 and Abnehmen

The question about a link between VKORC1 and weight loss (Abnehmen) lacks scientific evidence. VKORC1 encodes vitamin K epoxide reductase, a key enzyme in the vitamin K cycle and blood coagulation. Polymorphisms in VKORC1 are primarily relevant for individualizing warfarin dosing (an anticoagulant). There are no robust studies showing a direct effect of VKORC1 variants on metabolism, fat oxidation, or body weight. Myths claiming that a VKORC1 genetic test helps with weight loss are misleading. The evidence is at best mechanistic: vitamin K is involved in regulating osteocalcin, which could theoretically influence bone metabolism, but not body weight. Consumer DNA tests analyzing VKORC1 should not be used for weight optimization. Clinical relevance is limited to pharmacogenetics. A balanced diet and physical activity remain the proven strategies for weight reduction.