Vitamin K2 Supplement Slowed Artery Calcification
A clinical trial found that daily supplementation reduced the progression of coronary calcification in older adults.
Updated on Sept. 23, 2026 in Heart Disease
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A two-year clinical trial conducted in Denmark found that individuals taking a combination of vitamin K2 MK-7 and vitamin D3 experienced a 21% slower increase in coronary artery calcification compared to those taking a placebo. The study, published in the journal Circulation, focused on older adults with established arterial health concerns.
Why it matters
Managing coronary artery calcification is critical for heart health, as high calcium buildup in the arteries is linked to increased cardiovascular risks. These findings provide insight into potential non-invasive strategies for slowing the progression of calcification in aging populations.
In a two-year clinical trial of 398 participants with an average age of 71, those taking 720 µg of vitamin K2 MK-7 and 25 µg of vitamin D3 daily saw a 21% slower progression of coronary artery calcification. Participants were selected based on a baseline calcification score of 400 Agatston units.
The players
Balchem
A chemical and nutrition company that produces K2Vital Delta, the supplement used in this trial.
The details
Coronary artery calcification involves the accumulation of calcium deposits in the vessel walls, which can stiffen arteries and restrict blood flow. Vitamin K2 MK-7 functions by activating matrix Gla protein, a molecule that helps regulate how calcium is deposited in the body, specifically preventing it from accumulating in soft tissues like artery walls. By directing calcium toward bone tissue rather than blood vessels, the supplementation aims to mitigate the hardening process associated with vascular aging.
Timeline
The clinical trial spanned a two-year study period.
Results from the study were published on September 23, 2026.
Health Landscape
This study contributes to the growing body of research investigating nutritional pathways to manage coronary artery calcification. It sits within the broader landscape of cardiovascular research, which seeks to identify interventions that can stabilize or slow arterial damage before clinical events occur.
Because coronary artery calcification is a serious indicator of heart health, any changes to your supplement regimen should be discussed with your physician. They can help determine if your specific calcium scores or cardiovascular profile warrant a conversation about these types of interventions.
The takeaway
Coronary artery calcification is a progressive process that requires clinical monitoring. If you have been diagnosed with high calcification scores, talk to your doctor about current research on nutritional factors that support vascular health.
Further reading
For more information on managing vascular health, visit our Heart Disease section.
Source note: This article includes information reported by Nutritioninsight.
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