Is VKORC1 useful for sleep?

Is VKORC1 useful for sleep? Based on current evidence, the answer is no. VKORC1 encodes a key enzyme in vitamin K metabolism and is primarily studied for its role in warfarin sensitivity. No credible human studies link VKORC1 variants to sleep duration, quality, or disorders. While consumer DNA tests (like those from MyBody-X) may include VKORC1 in broad panels, its relevance to sleep is not supported by science. Even well-studied circadian genes (e.g., CLOCK, PER) have only modest effects on sleep, and lifestyle factors dominate. Therefore, using VKORC1 for sleep advice is speculative and likely marketing-driven. For sleep issues, evidence-based approaches such as sleep hygiene, cognitive behavioral therapy, and medical evaluation are far more effective than unvalidated genetic markers.