Vitamin K intake and atherosclerosis.

Area of Science:

• Nutritional Science
• Cardiovascular Research
• Biochemistry

Background:

• Vitamin K is crucial for gamma-carboxylation of vitamin K-dependent proteins.
• Impaired carboxylation due to insufficient vitamin K intake is hypothesized to increase soft-tissue calcification.
• This review examines the evidence linking vitamin K intake to atherosclerosis.

Purpose of the Study:

• To review the evidence supporting the hypothesis that vitamin K intake influences soft-tissue calcification and atherosclerosis.
• To evaluate the role of vitamin K in preventing or reversing arterial calcification.

Main Methods:

• Literature review of animal models and human studies on vitamin K intake and cardiovascular health.
• Analysis of data on different forms of vitamin K (phylloquinone, menaquinone) and their association with calcification and cardiovascular disease risk.

Main Results:

• Animal models demonstrate that vitamin K can reverse arterial calcification induced by antagonists.
• Human studies show inconsistent associations between phylloquinone (dietary vitamin K) and cardiovascular disease risk.
• High intake of menaquinone may be linked to reduced coronary heart disease mortality, but requires further confirmation.

Conclusions:

• The role of vitamin K in preventing calcification is still debated.
• Despite a plausible biological mechanism, human studies have not consistently supported the hypothesis.
• Further research is needed to clarify the relationship between vitamin K intake and cardiovascular health.