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Does Vitamin K2 Prevent Calcified Heart Valves & Blocked Arteries?

Written By: Adam Pick, Patient Advocate, Author & Website Founder
Medical Expert: Marc Gillinov, MD, Chairman of Cardiac Surgery, Cleveland Clinic
Page Last Updated: May 12, 2025

Over the past few weeks, I've received several emails from patients about the benefits of Vitamin K2 specific to heart disease.

For example, Alicja wrote to me, "Adam - Thanks for all of your help. I am sending you an article about Vitamin K2 and how it is preventing calcification of arteries, heart valve stenosis and osteoporosis. I have been taking Vitamin K2 since last September and I am feeling much better. I feel that other people should read about Vitamin K2 and its potential benefits for heart disease patients. Thanks! Alicia"

Vitamin K2 & Calcifed Heart Valve Stenosis

Within her email, Alicja forward a link to very interesting article titled, "Vitamin K2: Bone and Heart Health". I reviewed the article and became intrigued by Vitamin K2 given its potential value for blocked arteries and calcified heart valves. (So you know, I began using supplements and fish oil after my heart valve surgery to help with ongoing fatigue.)

Given my interest in this topic, I reached out to Dr. Marc Gillinov, the Chairman of Cardiac Surgery at Cleveland Clinic and author of Heart 411. Given Dr. Gillinov's research about heart health, I was really curious to know his thoughts about the potential Vitamin K2 benefits for patients with heart disease including valvular defects and blocked arteries.

Dr. Marc Gillinov

As always, Dr. Gillinov was very quick to respond.

This is not evidence-based. We all ingest Vitamin K — it is found in leafy, green vegetables. There is no conclusive (or even good) evidence that supplements of Vitamin K have any health benefit. They may be particularly dangerous for those on Coumadin (Warfarin).

Similar to most discussions about nutritional supplements, there is always room to debate the safety, efficacy and actual benefits of these products. However, I wanted to address this topic so that we could all learn from Alicja and Dr. Gillinov.

I hope this helped you learn more about Vitamin K2 and its potential uses for heart health including calcified heart valves and blocked arteries.

Written by Adam Pick - Patient & Website Founder

Adam Pick is a heart valve patient and author of The Patient's Guide To Heart Valve Surgery. In 2006, Adam founded HeartValveSurgery.com to educate and empower patients. This award-winning website has helped over 10 million people fight heart valve disease. Adam has been featured by the American Heart Association and Medical News Today.

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