Vitamin K

Vitamin K is a fat-soluble vitamin that plays a crucial role in blood clotting, bone metabolism, and regulating blood calcium levels in the body. There are two main forms of vitamin K: K1 (phylloquinone) which is found in green leafy vegetables, and K2 (menaquinone) which is synthesized by bacteria in the gut and found in fermented foods.

Functions of Vitamin K

• Blood Clotting: Vitamin K is essential for the production of several proteins involved in the blood clotting process. Without adequate vitamin K, the blood clotting process would be impaired, leading to excessive bleeding.
• Bone Metabolism: Vitamin K is involved in the regulation of calcium in bone tissues, and it helps in the formation of bone mineral, making it important for maintaining healthy bones.
• Cardiovascular Health: Some research suggests that vitamin K may also play a role in heart health by helping to prevent the calcification of arteries.

Sources of Vitamin K

Good food sources of vitamin K include:

• Green leafy vegetables such as spinach, kale, and broccoli
• Vegetable oils like soybean, canola, and olive oil
• Meat, dairy, and eggs
• Fermented foods such as cheese and natto

Deficiency and Toxicity

A deficiency in vitamin K can lead to impaired blood clotting, increased risk of hemorrhage, and weakened bones. On the other hand, toxicity from vitamin K is rare and usually only occurs with high-dose supplementation as the body does not readily store this vitamin.

Study Guide

1. What are the main functions of vitamin K in the body?
2. Discuss the sources of vitamin K and how it can be incorporated into a healthy diet.
3. Explain the consequences of a vitamin K deficiency and the potential risks of vitamin K toxicity.
4. Research and present on the role of vitamin K in bone health and cardiovascular function.

[Vitamin K] Related Worksheets and Study Guides:

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