Vitamin k

Vitamin K is a fat-soluble vitamin that plays a crucial role in blood clotting, bone metabolism, and regulating blood calcium levels. There are two main forms of vitamin K:

1. Vitamin K1 (phylloquinone): Found primarily in green leafy vegetables like spinach, kale, and broccoli. It is the main form of vitamin K in the diet.

2. Vitamin K2 (menaquinones): Found in some animal-based foods and fermented foods, and also produced by bacteria in the human gut.

Functions of Vitamin K:

• Essential for the synthesis of proteins required for blood clotting (coagulation).
• Important for bone health by regulating calcium binding in bones and other tissues.
• Helps prevent calcification of arteries and other soft tissues.

Deficiency:

• Can lead to bleeding problems due to impaired blood clotting.
• Deficiency is rare but can occur in newborns, people with malabsorption disorders, or those on certain medications like antibiotics or anticoagulants.

Sources:

• Green leafy vegetables (spinach, kale, collard greens)
• Broccoli and Brussels sprouts
• Fermented foods (like natto)
• Some animal products (liver, egg yolk)

If you need information on recommended daily intake, supplementation, or interactions with medications, feel free to ask!