Vitamin K
120 SupplementsVitamin K is a vital nutrient that plays a critical role in various bodily functions, particularly in blood clotting and bone health. It is a fat-soluble vitamin, meaning it is stored in the body’s fatty tissues and liver. There are two main forms of vitamin K: vitamin K1 (phylloquinone) and vitamin K2 (menaquinone). Each form has unique sources and benefits.
Supplemental Benefits of vitamin K:
Essential for Coagulation: Vitamin K is essential for the production of proteins called clotting factors that help control bleeding and blood clot formation. Without adequate vitamin K, the blood would have difficulty clotting, which could lead to excessive bleeding and hemorrhage.
Prevents Arterial Calcification: Vitamin K2, in particular, plays a role in cardiovascular health by helping to prevent the calcification of arteries, which can contribute to atherosclerosis and heart disease.
Improved Bone Density: Vitamin K (especially K2 MK-7, is involved in regulating calcium metabolism in bones and blood vessels. It helps activate proteins that bind calcium to bone, contributing to bone mineralization and density. Adequate vitamin K intake may help maintain bone health and reduce the risk of osteoporosis.
Forms and dosage:
Vitamin K1 (Phylloquinone): Primarily found in green leafy vegetables like spinach, kale, and broccoli. Often available as phytonadione in supplements. Essential for blood clotting and wound healing.
Vitamin K2 (Menaquinone): Vitamin K2 is a group of compounds called menaquinones, which are subdivided into several types based on the length of their side chains. The most common forms in supplements are MK-4 and MK-7.
K2 MK-4 (Menaquinone-4): Found in animal products like meat and dairy, and in some fermented foods. In supplements, available in synthetic form or derived from animal sources. Supports bone health and cardiovascular health. It is rapidly absorbed but has a shorter half-life in the bloodstream.
K2 MK-7 (Menaquinone-7): Commonly found in fermented foods, particularly natto (fermented soybeans). In supplements, often derived from bacterial fermentation processes. Enhances bone health, supports cardiovascular health, and has a longer half-life in the bloodstream, providing more sustained benefits.
Daily dose: 50 – 200 mcg.