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Is Vitamin K an Antioxidant?

By Derek Buckner

Vitamin K is stored in your body’s fat tissue and in your liver. Vitamin K gives your blood the ability to clot and it has an important hand in the role of bone health. While vitamin K is a very significant vitamin, it is not considered a classic antioxidant as some vitamins are, according to George Obikoya, M.D.

Vitamin K

Vitamin K is mostly known for clotting blood. Other vitamins, such as vitamins A, C and E receive recognition for acting as antioxidants and serving multiple purposes, according to Without enough vitamin K, you could bleed to death over a simple cut. Vitamin K helps reduce the risk of bleeding from various illnesses such as liver disease, long-term use of antibiotics, and malabsorption syndromes. Vitamin K helps your bones use calcium, which can help prevent certain conditions such as osteoporosis.


Antioxidants not only promote healthy tissues and cells, they possess healing properties. When your skin becomes sunburned, your body uses antioxidants, such as vitamin C, to help repair skin tissues and prevent further damage. Some ointments contain vitamins A and E to help promote wound healing and help reduce the amount of scar tissue. When your body is invaded with a fungal or bacterial infection, antioxidants come to your aid to fight the illness. The same is also true for cigarette smoke, whether first or secondhand, which can damage your lungs. Antioxidants work hard to repair lung tissue.

Food Sources of Antioxidants

Your body helps produce some antioxidants on its own to help fight off free radicals, according to You can also obtain antioxidants from your diet and by taking supplements. Leafy green vegetables, whole grains, fruits, nuts and dairy products are good sources of antioxidants. Eating a wide variety of foods is key to getting plenty of antioxidants in your diet.


If you feel that you’re not getting enough nutrients and antioxidants through diet alone, talk to your healthcare provider about the possibility of taking a supplement. Supplements are meant to help you meet your daily requirements of a certain nutrient and should not replace natural sources obtained from foods. If you get too much of a particular vitamin, such as vitamin A, it could cause side effects such as blurred vision, vomiting, liver damage and abnormal softening of the bones.

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