Vitamin K is a fat-soluble vitamin crucial for body function, coming in two forms: K1 (phylloquinone) from plants and K2 (menaquinone) from animal foods and gut bacteria. It is essential for blood clotting, bone health, and other bodily processes. The daily requirement is 122 mcg for women and 138 mcg for men. Good sources include dark leafy greens, broccoli, cheese, and fermented foods. Vitamin K can interact with various medications, including blood thinners. Signs of deficiency include extended blood clotting time, bleeding, and osteoporosis. While most people get enough from their diet, those with persistent bleeding or bruising should consult a doctor.


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