Where To Buy Vitamin K 2 ((HOT))
Vitamin K is a fat-soluble vitamin, so your body stores it in fat tissue and the liver. It is best known for its role in helping blood clot, or coagulate, properly. The "K" comes from its German name, Koagulationsvitamin. Vitamin K also plays an important role in bone health.
where to buy vitamin k 2
In the U.S., Canada, Great Britain, and many other countries, all newborns receive vitamin K injections to prevent the possibility of bleeding, particularly in the brain. Babies are born without any bacteria in their intestines and do not get enough vitamin K from breast milk to tide them over until their bodies are able to make it.
Even though vitamin K deficiency in newborns is very rare, it is dangerous enough that doctors give the injections. Newborns at greatest risk for vitamin K deficiency are premature or those whose mother had to take seizure medications during pregnancy. Mothers on seizure medications are often given oral vitamin K for 2 weeks before delivery.
Your body needs vitamin K to use calcium to build bone. People who have higher levels of vitamin K have greater bone density, while low levels of vitamin K have been found in those with osteoporosis. Similarly, some studies suggest that low levels of vitamin K are associated with a higher risk of osteoarthritis.
Foods that contain a significant amount of vitamin K include beef liver, green tea, turnip greens, broccoli, kale, spinach, cabbage, asparagus, and dark green lettuce. Chlorophyll is the substance in plants that gives them their green color and provides vitamin K.
Antibiotics -- Antibiotics, especially those known as cephalosporins, reduce the absorption of vitamin K in the body. Using them for more than 10 days may lower levels of vitamin K because these drugs kill not only harmful bacteria but also the bacteria that make vitamin K. People who already have low levels of vitamin K, such as those who are malnourished, elderly, or taking warfarin (Coumadin) are at greater risk. Cephalosporins include:
Phenytoin (Dilantin) -- Phenytoin interferes with the body's ability to use vitamin K. Taking anticonvulsants (such as phenytoin) during pregnancy or while breastfeeding may lower vitamin K in newborns.
Orlistat (Xenical, Alli) and Olestra -- Orlistat, a medication used for weight loss, and olestra, a substance added to some foods, lowers the amount of fat you body can absorb. Because vitamin K is a fat-soluble vitamin, these medications may also lower levels of vitamin K. The Food and Drug Administration now requires that vitamin K and other fat-soluble vitamins (A, D, and E) be added to food products containing olestra. Doctors who prescribe orlistat usually recommend taking a multivitamin with these vitamins. If you should not be taking vitamin K, then you should avoid foods that contain olestra.
Cholesterol-lowering medications -- Bile acid sequestrants, used to reduce cholesterol, reduce how much fat your body absorbs and may also reduce absorption of fat-soluble vitamins. If you take one of these drugs, your doctor may recommend a vitamin K supplement:
Thornquist MD, Kristal AR, Patterson RE, et al. Olestra consumption does not predict serum concentrations of carotenoids and fat-soluble vitamins in free-living humans: early results from the sentinel site of the olestra post-marketing surveillance study. J Nutr. 2000;130(7):1711-1718.
A study published by the European Prospective Investigation into Cancer and Nutrition (EPIC) revealed that increased intake of vitamin K2 may reduce the risk of prostate cancer by 35 percent. (1) The authors point out that the benefits of K2 were most pronounced for advanced prostate cancer and, importantly, that vitamin K1 did not offer any prostate benefits.
The findings were based on data from more than 11,000 men taking part in the EPIC Heidelberg cohort. It adds to a small but fast-growing body of science supporting the potential health benefits of vitamin K2 for bone, cardiovascular, skin, brain, and prostate health.
Unfortunately, many people are not aware of the health benefits of the K2 vitamin. The K vitamins have been underrated and misunderstood up until very recently in both the scientific community and the general public.
A large epidemiological study from the Netherlands illustrates this point well. Researchers collected data on the vitamin K intakes of the subjects between 1990 and 1993. (2) They measured the extent of heart disease in each subject, who had died from it, and how this related to K2 intake and arterial calcification. They found that calcification of the arteries was the best predictor of heart disease. Those in the highest third of K2 intakes were:
While K1 is preferentially used by the liver to activate blood clotting proteins, K2 is preferentially used by other tissues to deposit calcium in appropriate locations, such as in the bones and teeth, and prevent it from depositing in locations where it does not belong, like the soft tissues. (3) In an acknowledgment of the different roles played by vitamins K1 and K2, the United States Department of Agriculture (USDA) determined the vitamin K2 contents of foods in the U.S. diet for the first time in 2006. (4)
A common misconception is that human beings do not need K2 in their diet, since they have the capacity to convert vitamin K1 to K2. The amount of K1 in typical diets is generally greater than that of K2, and researchers and physicians have largely dismissed the contribution of K2 to nutritional status as insignificant.
It was once erroneously believed that intestinal bacteria played a major role in supplying the body with this vitamin. However, the majority of evidence contradicts this view. Most of the K2 produced in the intestine is embedded within bacterial membranes and not available for absorption. Thus, intestinal production of K2 likely makes only a small contribution to vitamin K status. (6)
Fermented foods, however, such as sauerkraut, cheese, and natto, contain substantial amounts of vitamin K2. Natto contains the highest concentration of K2 of any food measured; nearly all of it is present as MK-7, which research has shown to be a highly effective form. One study demonstrated that MK-7 increased the percentage of osteocalcin in humans three times more powerfully than did vitamin K1. (7)
Therefore, vitamin K2 levels will not be high in butter from grain-fed cows raised in confinement feedlots. Since the overwhelming majority of butter sold in the U.S. comes from such feedlots, butter is not a significant source of K2 in the diet for most people. This is yet another argument for obtaining raw butter from cows raised on green pasture.
Hi Chris, I just have a thought on vitamin k1 if I may? I read that the best source of this fat soluble vitamin is low fat leafy greens! And that you should also consume those leafy greens with fat! I am struggling to believe we evolved eating leafy greens for our k1 so I was wondering if we could not get k1 from animals who ate grass? They would eat the k1 in the grass, then we would eat them. I know grass fed meats are a source of omega 3 fatty acids, so could k1 also be found in grass eating animals? Would make a lot more sense to me from an evolutional point of view too, as I am sure leafy greens should also be cooked first before eating for maximum nutrition???Just a thought,Best,Mark
Vitamin K refers to a family of fat-soluble vitamins that possess a similar chemical structure but differ by the length of their side chains. Vitamin K1 (phylloquinone) is found in green leafy vegetables and is the primary source of vitamin K in the American diet. Vitamin K2 (menaquinone) is of microbial origin and is mainly present in select fermented foods like natto (fermented soybeans). While there are multiple forms of vitamin K2, the most bioavailable and biologically active form is MK-7, which is the form that is present in natto. Vitamin K supports calcium absorption, and heart, bone dental, and prostate health.
Individuals who have a difficult time digesting or absorbing fats are at a greater risk of deficiency since vitamin K is a fat-soluble nutrient. This includes those with gastrointestinal malabsorption disorders, impaired liver function and those with cystic fibrosis. The long-term use of some antibiotics may also negatively impact vitamin K synthesis and absorption. Anticoagulant medications, such as Warfarin, often function as vitamin K antagonists and may impact vitamin K levels and/or vitamin K-dependent clotting factors. If taking medication, especially anticoagulant medications, it is very important to consult with a healthcare provider before consuming vitamin K from food or supplementation.
Most western diets today provide vitamin K1 (phylloquinone) but very little vitamin K2 (menaquinones). Vitamin K1 can be found in leafy green vegetables and some plant oils. Vitamin K2, however, is of microbial origin and is typically found only in select fermented foods such as some types of cheese (not processed), curds, and natto. The most reliable food source of Vitamin K2 is natto, a type of fermented soybeans. Natto provides vitamin K2 as MK-7, the most bioavailable and biologically active form of vitamin K2. Given that most diets provide little to no vitamin K2, supplementation may sometimes be necessary to meet the recommended dietary allowance.
The main role of vitamin K1 is supporting normal blood coagulation, or clotting. Vitamin K1 is primarily active in the liver with only a small amount being released for circulation in the body. Vitamin K2, on the other hand, especially the long-chain form MK-7, is circulated throughout the body and activates multiple vitamin K dependent proteins. This is one reason why vitamin K2 may provide unique and separate benefits from vitamin K1. Research demonstrates that vitamin K2 helps the body absorb and utilize calcium efficiently, directing calcium to bones and away from arteries, supporting both bone and cardiovascular health in the process. 041b061a72