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Vitamin K is a fat-soluble vitamin that is essential for the formation of blood clotting factors. You can get its K1 form from vegetables, while the K2 form is found in things like liver, eggs, cheese, and especially Japanese fermented natto soybeans.
You can get K1 vitamin from broccoli, spinach, other green leafy vegetables, and vegetable oils.
Vitamin K2 (menaquinone-7) may slow down the calcification of plaques.
Vitamin K2 might help reduce the calcification of arteries in patients with coronary artery disease. However, it's still unclear whether the effect is strong enough to actually lower the risk of heart attacks or other symptoms of coronary artery disease.
Forms of vitamin K include phylloquinone, or vitamin K1, found in vegetables, and menaquinone, or vitamin K2, found in animal products. The bacteria in the human gut also produce menaquinone as part of normal digestion.
Vitamin K deficiency is very rare. It can especially occur in gut diseases and absorption disorders. If there is a deficiency, it can show up as easy bruising and bruises, bleeding, and slow healing of wounds.
