What role does VKORC1 play in blood sugar?

VKORC1 is primarily known for its role in vitamin K recycling and warfarin sensitivity. Its direct effect on blood sugar is not well established. Some mechanistic studies suggest that vitamin K-dependent proteins (e.g., osteocalcin) may influence insulin sensitivity and glucose metabolism, but human evidence is limited and inconsistent. VKORC1 variants that alter vitamin K activity could theoretically affect these pathways, but no strong genetic association with blood sugar levels has been confirmed. Consumer DNA tests like MyBody-X may report VKORC1 variants, but their relevance to glucose control is speculative. Evidence: mechanistic/unclear.