why do we need vitamin k in our diet

Vitamin K refers to a group of fat-soluble vitamins that play a role in blood clotting, bone metabolism, and regulating blood calcium levels. The body needs K to produce prothrombin, a protein and clotting factor that is important in blood clotting and bone metabolism. People who use blood-thinning medications, such as warfarin, or Coumadin, should not start consuming additional vitamin K without first asking a doctor. Deficiency is rare, but, in severe cases, it
clotting time, leading to hemorrhage and excessive bleeding. Vitamin K1, or phylloquinone, comes from plants. It is the of dietary vitamin K. A lesser source is vitamin K2, or menaquinone, which occurs in some animal-based and fermented foods. Phylloquinone, also known as vitamin K1, is found in plants. When people eat it, bacteria in the large intestine convert it to its storage form, vitamin K2. It is absorbed in the small intestine and stored in fatty tissue and the liver. Without vitamin K, the body cannot produce prothrombin, a clotting factor that is necessary for blood clotting and bone metabolism. Most Americans are of a vitamin-K deficiency. It is most likely to affect newborns and those with a malapsorption problem, due, for example, to short-bowel syndrome, or ulcerative colitis. Newborns normally a vitamin K injection to protect them from bleeding in the skull, which could be fatal. The recommended adequate intake for vitamin K depends on age and gender.


Women aged 19 years and over should consume (mcg) a day, and men should have 120 mcg. Vitamin K benefits the body in various ways. There a correlation between low intake of vitamin K and. Several studies have that vitamin K supports the maintenance of strong bones, improves bone density and decreases the risk of. However, research has not confirmed this. Increased blood levels of vitamin K have been improved episodic memory in older adults. In one study, healthy individuals over the age of 70 years with the highest blood levels of vitamin K1 had the highest verbal episodic memory performance. Vitamin K may help keep lower by preventing mineralization, where minerals build up in the arteries. This enables the heart to pump blood freely through the body. Mineralization with age, and it is a major risk factor for. Adequate intake of vitamin K has also been shown to lower the risk of. Vitamin K1 occurs in high amounts in leafy green vegetables, such as and Swiss chard. Other sources include vegetable oils and some fruits. Sources of menanoquines, or K2, include meat, dairy products, eggs, and Japanese "natto," made from fermented soy beans. Most adults in the U. S. are believed to consume enough vitamin K. These healthy recipes have been developed by a registered dietitian. They can increase your vitamin K intake. Dietary fat enhances the absorption of vitamin K, so a salad of green leaves drizzled olive oil would both provide vitamin K and help the body absorb it.


No tolerable upper limit has been determined for vitamin K. Toxicity is rare and unlikely to result from eating foods containing vitamin K. However, taking any type of supplement can lead to toxicity. Vitamin K can interact with several common medications, including blood-thinners, anticonvulsants, cholesterol-lowering drugs, and weight-loss drugs. Blood thinners, such as warfarin are used to prevent harmful blood clots that may block blood flow to the brain or heart. They work by decreasing or delaying vitamin K's clotting ability. Suddenly increasing or decreasing vitamin K intake can interfere with the effects of these drugs. Keeping vitamin K intake consistent from day to day can prevent these problems. Anticonvulsants, if taken during pregnancy or while breastfeeding, can increase the risk of vitamin K deficiency in a fetus or a newborn. Examples of anticonvulsants are phenytoin and dilantin. Cholesterol-lowering medications interfere with fat absorption. Dietary fat is necessary for absorbing vitamin B, so people who are taking this medication may have a higher risk of deficiency. Anyone who is taking any of these medications should speak to their doctor about their vitamin K intake. The best way to ensure the body has sufficient nutrients is to consume a balanced diet, with plenty of fruit and vegetables.


Supplements should only be used in case of deficiency, and then, under medical supervision. plays a key role in helping the, preventing excessive bleeding. Unlike many other, vitamin K is not typically used as a. Vitamin K is actually a group of compounds. The most important of these compounds appears to be vitamin K1 and vitamin K2. Vitamin K1 is obtained from leafy greens and some other vegetables. Vitamin K2 is a group of compounds largely obtained from meats, cheeses, and eggs, and synthesized by bacteria. Vitamin K1 is the main form of vitamin K supplement available in the U. S. Recently, some people have looked to vitamin K2 to treat and steroid-induced, but the research is conflicting. At this point there is not enough data to recommend using vitamin K2 for. Why do people take vitamin K? Low levels of vitamin K can raise the risk of uncontrolled bleeding. While vitamin K deficiencies are rare in adults, they are very common in infants. A single injection of vitamin K for newborns is standard. Vitamin K is also used to counteract an overdose of the. While vitamin K deficiencies are uncommon, you may be at higher risk if you: Have a disease that affects absorption in the digestive tract, such as or active In these cases, a provider might suggest vitamin K. Uses of vitamin K for, for the symptoms of, for the removal of spider veins, and for other conditions are unproven.

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