Vitamin D3 + K2: What They REALLY Do to Your Arteries

Vitamin D3 and vitamin K2 are often promoted as a powerful combination for heart and artery health—but what does the scientific evidence actually tell us? In this video, we take a closer look at what D3 and K2 may do for your arteries, what the research has found, and where the claims go too far. We cover: • Why vitamin D is associated with cardiovascular health • What the large VITAL trial found about vitamin D3 and cardiovascular events • Why taking more vitamin D isn't necessarily better • What vitamin K2 and matrix Gla protein (MGP) have to do with vascular calcification • Whether K2 can actually remove calcium from your arteries • What research on MK-7 and coronary artery calcification has found • Why a coronary calcium score doesn't tell the whole story about your cardiovascular risk • The connection between metabolic health and cardiovascular disease • Why blood glucose, blood pressure, physical activity, body composition, and diet matter • Why you shouldn't automatically copy someone else's vitamin D3 or K2 dose • Why people taking warfarin and other vitamin K antagonists need to be especially careful with vitamin K supplementation The bottom line is simple: vitamin D3 and K2 may have important biological roles, but current evidence does not establish K2 as a treatment that simply “cleans calcium out of your arteries” or reverses atherosclerosis. The goal isn't to take the most supplements possible. The goal is to understand your individual risk factors and make informed decisions based on evidence, appropriate testing, lifestyle, and professional medical guidance. Sources Manson JE, et al. (2019). *Vitamin D Supplements and Prevention of Cancer and Cardiovascular Disease.* New England Journal of Medicine, 380(1), 33–44. VITAL randomized clinical trial. Oikonomaki T, et al. (2019). *The effect of vitamin K2 supplementation on vascular calcification in haemodialysis patients: a 1-year follow-up randomized trial.* International Urology and Nephrology, 51(11), 2037–2044. Brandenburg VM, et al. (2017).** *Vitamin K2: The potential role in vascular calcification and cardiovascular disease.* Current Opinion in Lipidology. NIH Office of Dietary Supplements (2021). *Vitamin D — Fact Sheet for Health Professionals National Institutes of Health, Office of Dietary Supplements. **5. NIH Office of Dietary Supplements (2021).** *Vitamin K — Fact Sheet for Health Professionals.* National Institutes of Health, Office of Dietary Supplements. **6. Effects of Vitamin K2 and D Supplementation on Coronary Artery Disease in Men (2024).** Randomized controlled trial examining vitamin K2 and vitamin D supplementation and coronary artery calcification progression. Disclaimer This video is for educational purposes only and is not medical advice, diagnosis, or treatment; speak with a qualified healthcare professional before changing medications or starting high-dose vitamin D, vitamin K2, or other supplements. Vitamin K can interact with anticoagulants such as warfarin, and individual supplementation decisions should be based on your health history, medications, and appropriate laboratory testing.