Vitamin K2 and Vascular Health

Vitamin K2 plays an important role in regulating calcium metabolism in the body. While calcium is essential for bone health, inappropriate deposition of calcium in the arteries contributes to vascular stiffness and cardiovascular disease.

One of the key proteins involved in this process is matrix Gla protein (MGP), which is found in tissues such as the heart, kidneys, and lungs. MGP helps prevent calcium from accumulating in the arterial wall, thereby supporting vascular flexibility and function [1,2].

Calcification and Vascular Function

Arterial calcification reduces the ability of blood vessels to relax. Even when nitric oxide (NO) signaling is intact, stiff, calcified arteries may not respond adequately. This may help explain why strategies aimed at improving nitric oxide production do not always produce the expected clinical results.

Maintaining proper calcium balance within the vascular system is therefore an important component of cardiovascular health.

Evidence from the Rotterdam Study

The relationship between vitamin K2 intake and cardiovascular health has been examined in large population studies.

In the Rotterdam Study, 4,807 subjects without a history of myocardial infarction were followed for 7–10 years. Higher dietary intake of menaquinone (vitamin K2) was associated with:

Reduced risk of coronary heart disease mortality
Lower all-cause mortality
Reduced incidence of severe aortic calcification

These findings suggest that adequate intake of vitamin K2 may play a role in maintaining vascular health and reducing cardiovascular risk [3].

Clinical Perspective

Some clinicians use higher levels of vitamin K2 supplementation in practice, particularly in patients with concerns related to vascular calcification. The goal is to support proper calcium distribution and maintain arterial flexibility.