{"id":36694,"date":"2026-05-06T18:43:40","date_gmt":"2026-05-06T17:43:40","guid":{"rendered":"https:\/\/jegharkraeft.dk\/?p=36694"},"modified":"2026-05-06T18:43:49","modified_gmt":"2026-05-06T17:43:49","slug":"vitamin-k","status":"publish","type":"post","link":"https:\/\/jegharkraeft.dk\/en\/vitamin-k\/","title":{"rendered":"Vitamin K and cancer"},"content":{"rendered":"\n<div class=\"wp-block-group alignfull is-style-section-5 has-contrast-color has-base-background-color has-text-color has-background has-link-color wp-elements-bb9070c007c4bfe511296e044d36aa76 has-global-padding is-layout-constrained wp-block-group-is-layout-constrained is-style-section-5--2\" id=\"menu\" style=\"margin-top:0;margin-bottom:0;padding-top:var(--wp--preset--spacing--50);padding-bottom:var(--wp--preset--spacing--50)\">\n<div class=\"wp-block-columns alignwide is-layout-flex wp-container-core-columns-is-layout-ca2dd60b wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h2 class=\"wp-block-heading has-custom-int-link-p-sort-1-color has-text-color has-link-color wp-elements-a867a5e69af727a1b962d2b1d75fb9e7\"><span class=\"ez-toc-section\" id=\"Dietary_Supplements_Grouped_by_Effect\"><\/span><a href=\"https:\/\/jegharkraeft.dk\/en\/kosttilskud-grupperet\/\"><\/a><a href=\"https:\/\/jegharkraeft.dk\/en\/kosttilskud-grupperet\/\">Dietary Supplements Grouped by Effect<\/a><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Dietary_Supplements_Alphabetical\"><\/span><a href=\"https:\/\/jegharkraeft.dk\/en\/supplements-alphabetically\/\">Dietary Supplements Alphabetical<\/a><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h4 class=\"wp-block-heading has-custom-int-link-p-sort-1-color has-text-color has-link-color wp-elements-1de2cf937f0fa983a3a9325ed927ddff\"><a href=\"https:\/\/jegharkraeft.dk\/en\/acai-berries-and-cancer\/\">A,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/baicalin\/\">B,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/cats-claw-tomentosa\/\">C,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/danshen\/\">D,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/echinacea\/\">E+F,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/garcinia-cambogia\/\">G,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/hemp-seeds\/\">H,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/indol-3-carbinol\/\">I+J+K,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/lions-mane\/\">L,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/maitake\/\">M,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/n-acetyl-cysteine\/\">N,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/omega-3\/\">O,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/peppermint\/pebermynte\/\">P<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-interne-links-color\">,<\/mark><\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/quercetin\/\">Q,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/reishi\/\">R,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/selenium\/\">S,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/thc-cannabis\/\">T,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/vitamin-b\/\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-hvid-tekst-color\">U+V+Z<\/mark><\/a><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-custom-int-link-p-sort-1-color has-text-color has-link-color wp-elements-71aa9b5a0649281f0f8a6256d7572622\"><a href=\"https:\/\/jegharkraeft.dk\/en\/vitamin-a\/\">Vitamin A<\/a><\/li>\n\n\n\n<li class=\"has-custom-int-link-p-sort-1-color has-text-color has-link-color wp-elements-e2f70a10fb32de8722431fb8c3a49878\"><a href=\"https:\/\/jegharkraeft.dk\/en\/vitamin-b\/\">Vitamin B<\/a><\/li>\n\n\n\n<li class=\"has-custom-int-link-p-sort-1-color has-text-color has-link-color wp-elements-68452c362660d1d6997c3ec15cba5a6e\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-her-st-r-du-color\"><a href=\"https:\/\/jegharkraeft.dk\/en\/vitamin-c\/\">Vitamin C<\/a><\/mark><\/li>\n\n\n\n<li class=\"has-custom-int-link-p-sort-1-color has-text-color has-link-color wp-elements-981e731e15c9722beeff96a79170ac7a\"><a href=\"https:\/\/jegharkraeft.dk\/en\/vitamin-d\/\">Vitamin D<\/a><\/li>\n\n\n\n<li class=\"has-custom-int-link-p-sort-1-color has-text-color has-link-color wp-elements-c2df2c538443dc6f797308c49d52d740\"><a href=\"https:\/\/jegharkraeft.dk\/en\/vitamin-e\/\">Vitamin-E<\/a><\/li>\n\n\n\n<li class=\"has-custom-her-st-r-du-color has-text-color has-link-color wp-elements-edcebe2f35ec3ee348a91381ff64ea79\"><a href=\"#vitamin-k\">Vitamin K (scroll down)<\/a><\/li>\n\n\n\n<li class=\"has-custom-int-link-p-sort-1-color has-text-color has-link-color wp-elements-18ce6558de3ebb3a4e006a8550d2e174\"><a href=\"https:\/\/jegharkraeft.dk\/en\/black-walnut\/\">Walnut, black<\/a><\/li>\n\n\n\n<li class=\"has-custom-int-link-p-sort-1-color has-text-color has-link-color wp-elements-fb66dafbfb65ecb0b730d28a3bb7a359\"><a href=\"https:\/\/jegharkraeft.dk\/en\/wormwood\/\">Wormwood \/Malurt<\/a><\/li>\n\n\n\n<li class=\"has-custom-int-link-p-sort-1-color has-text-color has-link-color wp-elements-c96c5ef4763695ba777348f6aa1c6eff\"><a href=\"https:\/\/jegharkraeft.dk\/en\/zink\/\">Zink<\/a><\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-group has-custom-interne-links-color has-text-color has-link-color wp-elements-a141aae0da29d0267d89e3bd69e2a683 has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\"><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/jegharkraeft.dk\/wp-content\/uploads\/2025\/02\/bvitamin-K2.jpg\" alt=\"Vitamin K symboliseret ved gr\u00f8nt pilleglas fra Swanson med p\u00e5skriften K-2, Bone and Cardiovascular Health.\" class=\"wp-image-36693\" style=\"aspect-ratio:3\/2;object-fit:cover;width:550px\"\/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group alignfull is-style-default has-global-padding is-layout-constrained wp-container-core-group-is-layout-b040ace0 wp-block-group-is-layout-constrained has-background\" style=\"margin-top:0;margin-bottom:0;padding-top:var(--wp--preset--spacing--60);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--60);padding-left:var(--wp--preset--spacing--20);background-image:url(&apos;https:\/\/jegharkraeft.dk\/wp-content\/uploads\/2025\/02\/bvitamin-K2.jpg&apos;);background-position:44% 36%;background-size:cover;\">\n<div class=\"gb-element-906497af\">\n<h1 class=\"wp-block-heading\" id=\"vitamin-k\"><span class=\"ez-toc-section\" id=\"Vitamin_K_and_cancer\"><\/span>Vitamin K and cancer<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<h4 class=\"wp-block-heading\">What is vitamin K<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Vitamin K is a fat-soluble vitamin that plays a crucial role in blood coagulation (clotting) and bone health [1, 2, 4, 5].<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">There are three main types of vitamin K:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K1 (phylloquinone)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Primarily found in green leafy vegetables.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K2 (menaquinone)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Found in fermented foods (e.g., natto (Japanese fermented soybeans)), animal products (e.g., meat and eggs), and is also produced in smaller amounts by bacteria in the human gut.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K3 (menadione)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A synthetic form of vitamin K that is not found naturally in foods.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">While vitamin K is traditionally known for its role in blood clotting, newer research has indicated that it may also play a role in cancer prevention and treatment [3, 7, 8, 9].<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">K1 and K2 are, as mentioned above, the common forms of vitamin K in the diet. But in relation to cancer, vitamin K3 has also shown potential anti-cancer properties and is thus particularly interesting.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Mechanisms_of_action_and_potential\"><\/span>Mechanisms of action and potential<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vitamin K&#8217;s potential role in cancer is related to the following mechanisms of action:<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1. Apoptosis (programmed cell death):<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Apoptosis is a natural process where cells &#8220;commit suicide&#8221; in a controlled manner. It is the body&#8217;s way of removing damaged, old, or unnecessary cells. Cancer cells often avoid this process and continue to divide uncontrollably.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K1 and K2<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">These forms of vitamin K can activate proteins such as caspases, which function as &#8220;executioners&#8221; in the apoptosis process.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">They can also affect signaling pathways in the cell that regulate apoptosis, for example by inhibiting proteins that normally block apoptosis.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Studies have shown that K1 and K2 can induce apoptosis in various cancer cell types, including leukemia, lung, liver, and breast cancer [3].<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K3<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vitamin K3 works primarily by increasing the production of reactive oxygen species (ROS) in cancer cells [7, 8].<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ROS are unstable molecules that can damage the cell&#8217;s DNA, proteins, and membranes, which can ultimately lead to cell death.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This mechanism can be particularly effective in cancer cells, as they often have a higher level of ROS than normal cells.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2. Cell growth and differentiation:<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Cell growth and differentiation are carefully regulated processes that are crucial for normal cell function. Cancer often arises due to disruptions in these processes, leading to uncontrolled cell growth and tumor formation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Vitamin K&#8217;s role<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vitamin K can affect various signaling pathways and proteins involved in the regulation of cell growth and differentiation [3].<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For example, vitamin K can inhibit the activity of certain proteins that promote cell growth and stimulate proteins that promote cell differentiation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This can potentially contribute to preventing cancer development or inhibiting the growth of existing cancer cells.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">3. Bone health:<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Cancer and cancer treatment can have a negative impact on bone health. Chemotherapy and radiation therapy can weaken bones and increase the risk of osteoporosis and bone fractures.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Vitamin K2&#8217;s role<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vitamin K2 is crucial for the activation of osteocalcin, a protein that binds calcium to the bones [1, 2, 5].<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This increases bone density and strength, which can protect cancer patients against bone loss and reduce the risk of bone fractures.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">4. Blood clotting:<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Cancer patients have an increased risk of developing blood clots (thrombosis), especially in the veins (venous thromboembolism).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Vitamin K&#8217;s role<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vitamin K is essential for the formation of several coagulation factors necessary for blood clotting [1, 2, 4, 5].<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">While this is crucial to prevent bleeding, it can also be a challenge for cancer patients with an increased risk of blood clots.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Therefore, it is important to find a balance between ensuring adequate vitamin K to prevent bleeding and avoiding too much vitamin K, which can increase the risk of blood clots [6].<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This requires careful monitoring and individual assessment of each patient, especially for those taking blood-thinning medication.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Balance<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">It is important to find a balance between ensuring adequate vitamin K to prevent bleeding and avoiding too much vitamin K, which can increase the risk of blood clots. This requires careful monitoring and individual assessment of each patient.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Summary:<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vitamin K has potentially multiple roles in relation to cancer, including induction of apoptosis, regulation of cell growth and differentiation, protection of bone health, and a complex role in blood clotting [3, 7, 8, 9]. More research is needed to fully understand these mechanisms and optimize the use of vitamin K in cancer prevention and treatment.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Preclinical_and_clinical_studies\"><\/span>Preclinical and clinical studies<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">There is a growing amount of preclinical and clinical studies examining vitamin K&#8217;s potential in cancer prevention and treatment.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Preclinical studies<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In vitro and animal studies have shown that vitamin K can inhibit the growth of various cancer cells, including liver, lung, prostate, and breast cancer cells [3, 7, 8, 9].<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Clinical studies<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The results from clinical studies are more mixed. Some studies have shown that vitamin K can improve survival and reduce the risk of recurrence in patients with liver cancer. Other studies have not found a significant effect of vitamin K on cancer progression.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">There is a need for more research, especially large, randomized clinical studies, to confirm the potential benefits of vitamin K in cancer treatment and determine the optimal dosage and use.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Too_much_and_too_little\"><\/span>Too much and too little<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">It is important to have the right balance in the blood&#8217;s content of vitamin K, as it is unfortunate if one has too low content, but also if one has too high content of vitamin K (which is rare as diet-related alone).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Too little vitamin K<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Deficiency in vitamin K is rare, but can lead to increased bleeding tendency. Cancer patients taking blood-thinning medication should be particularly aware of their vitamin K intake, as vitamin K can counteract the effect of these drugs [6].<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Too much vitamin K<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">There are no known side effects from ingesting too much vitamin K from the diet. However, high doses of vitamin K supplements can potentially interact with certain types of medication [6].<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Dispensing_and_intake\"><\/span>Dispensing and intake<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vitamin K is found in various forms, including:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Dietary supplements: Available in tablet, capsule, and liquid form.<\/li>\n\n\n\n<li>Fortified foods: Some foods are fortified with vitamin K.<\/li>\n\n\n\n<li>Natural sources: Vitamin K1 is primarily found in green leafy vegetables, while K2 is found in fermented foods and animal products.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Dosage<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The recommended daily dose of vitamin K varies depending on age and gender. It is important to follow the recommendations on the product and consult a qualified healthcare provider before starting vitamin K supplements, especially if you are taking other medication or have a chronic illness.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Benefits_of_vitamin_K\"><\/span>Benefits of vitamin K<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In addition to the mechanisms of action described earlier, vitamin K can have a number of potential benefits for cancer patients:<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Improved bone health<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Vitamin K can help strengthen bones and reduce the risk of bone fractures in cancer patients [1, 2, 5].<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Prevention of blood clots<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Vitamin K&#8217;s role in blood clotting can be relevant for preventing blood clots in cancer patients [1, 2, 4, 5].<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Potential synergistic effect<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Some studies suggest that vitamin K can enhance the effect of chemotherapy [9].<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Disadvantages_and_limitations\"><\/span>Disadvantages and limitations<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Although vitamin K has potential benefits for cancer patients, there are also some disadvantages and limitations:<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Limited clinical evidence<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">There is a need for more research to confirm the potential benefits of vitamin K in cancer treatment and determine the optimal dosage and use [3, 7, 8, 9].<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Interactions with medication<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Vitamin K can interact with certain types of medication, including blood-thinning medication [6].<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Not a substitute for conventional treatment<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Vitamin K should not be used as a substitute for chemotherapy, radiation therapy, or other conventional cancer treatment.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vitamin K has potentially multiple roles in relation to cancer, including induction of apoptosis in cancer cells, regulation of cell growth and differentiation, protection of bone health, and a complex role in blood clotting [3, 7, 8, 9]. However, like with almost all dietary supplements, there is a need for more research to fully understand these mechanisms and optimize the use of vitamin K in cancer prevention and treatment.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vitamin K supplements can thus have potential benefits for cancer patients. Vitamin K supplementation should be done in consultation with a competent healthcare provider, who can assess the need for supplementation and ensure that it does not interact with other medication.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Back to <a href=\"https:\/\/jegharkraeft.dk\/en\/supplements-alphabetically\/\" target=\"_blank\" rel=\"noreferrer noopener\">Supplements<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"vitamin-k\">Also see <a href=\"https:\/\/jegharkraeft.dk\/en\/kosttilskud-og-kemoterapi\/\" target=\"_blank\" rel=\"noreferrer noopener\">Dietary supplements and Chemotherapy &#8211; interactions<\/a><\/p>\n\n\n\n<p class=\"has-custom-menu-links-color has-text-color has-link-color wp-elements-9190cfe395c28e4d2ec89873338ddaa5 wp-block-paragraph\"><a href=\"#menu\">(to menu)<\/a><a href=\"https:\/\/jegharkraeft.dk\/en\/supplements-alphabetically\/\"><\/a><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Links<\/h4>\n\n\n\n<p class=\"has-custom-sort-tekst-color has-text-color has-link-color wp-elements-874bd51b1e4e41099ebf9e662823db3c wp-block-paragraph\">[1] <a href=\"https:\/\/ugeskriftet.dk\/videnskab\/k2-vitamin-har-betydning-ved-en-raekke-sygdomme\" target=\"_blank\" rel=\"noreferrer noopener\">K2-vitamin har betydning ved en r\u00e6kke sygdomme<\/a> (Ugeskrift for L\u00e6ger, 2015) <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Content: General information about K2 vitamin having significance in a number of diseases. (Danish Language)<\/li>\n<\/ul>\n\n\n\n<p class=\"has-custom-sort-tekst-color has-text-color has-link-color wp-elements-1db86352fef506e9be0f012fafe24a1c wp-block-paragraph\">[2] <a href=\"https:\/\/netdoktor.dk\/vitaminer\/sygdomme\/k-vitamin\/\" target=\"_blank\" rel=\"noreferrer noopener\">K-Vitamin<\/a> (Netdoktor.dk, 2024) <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Content: General information about vitamin K. (Danish Language)<\/li>\n<\/ul>\n\n\n\n<p class=\"has-custom-sort-tekst-color has-text-color has-link-color wp-elements-c3aec16912b6d0cb635fa4af3a605eec wp-block-paragraph\">[3] <a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC9509427\/\" target=\"_blank\" rel=\"noreferrer noopener\">New insights on vitamin K biology with relevance to cancer<\/a> (PubMed, 2022) <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Content: General information about new insights on vitamin K biology with relevance to cancer.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-custom-sort-tekst-color has-text-color has-link-color wp-elements-d7a9e833b7dabf3a34797ff51150ffb1 wp-block-paragraph\">[4] <a href=\"http:\/\/dk4doktoren.dk\/2018\/08\/28\/k-vitaminer\" target=\"_blank\" rel=\"noreferrer noopener\">K-vitaminer<\/a> (Radiodoktoren, 2018) <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Content: General information about vitamin K. (Danish Language)<\/li>\n<\/ul>\n\n\n\n<p class=\"has-custom-sort-tekst-color has-text-color has-link-color wp-elements-9c303b1d67c3939675ed1dad84481172 wp-block-paragraph\">[5] <a href=\"https:\/\/content.ugeskriftet.dk\/sites\/default\/files\/scientific_article_files\/2016-04\/V12140700_1.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">K2-vitamin har betydning ved en r\u00e6kke sygdomme<\/a> (Ugeskrift for L\u00e6ger, 2015) <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Content: General information about K2 vitamin having significance in a number of diseases. (Danish Language)<\/li>\n<\/ul>\n\n\n\n<p class=\"has-custom-sort-tekst-color has-text-color has-link-color wp-elements-3527567464207eb579d47c624964f64a wp-block-paragraph\">[6] <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/39756929\/\" target=\"_blank\" rel=\"noreferrer noopener\">Administration of Immune Checkpoint Inhibitors to Patients on Warfarin May Elevate PT-INR<\/a> (PubMed, 2025) <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Content: Clinical study examining the administration of immune checkpoint inhibitors to patients on warfarin and its effect on PT-INR.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-custom-sort-tekst-color has-text-color has-link-color wp-elements-68ce6694c3b8193f77051c7010784661 wp-block-paragraph\">[7] <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/39225404\/\" target=\"_blank\" rel=\"noreferrer noopener\">Vitamin K3 derivative inhibits androgen receptor signaling in targeting aggressive prostate cancer cells<\/a> (PubMed, 2025) <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Content: In vitro study showing that a vitamin K3 derivative inhibits androgen receptor signaling in targeting aggressive prostate cancer cells.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-custom-sort-tekst-color has-text-color has-link-color wp-elements-563764315bb71314f0439c2458cdefe8 wp-block-paragraph\">[8] <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/39446948\/\" target=\"_blank\" rel=\"noreferrer noopener\">Dietary pro-oxidant therapy by a vitamin K precursor targets PI 3-kinase VPS34 function<\/a> (PubMed, 2024) <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Content: In vitro study showing that dietary pro-oxidant therapy by a vitamin K precursor targets PI 3-kinase VPS34 function.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-custom-sort-tekst-color has-text-color has-link-color wp-elements-bb132a3b060843e7239fc18d08b3790f wp-block-paragraph\">[9] <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/34993998\/\" target=\"_blank\" rel=\"noreferrer noopener\">Vitamin K: A novel cancer chemosensitizer<\/a> (PubMed, 2022) <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Content: In vitro study showing that vitamin K is a novel cancer chemosensitizer.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"has-custom-sort-tekst-color has-text-color has-link-color wp-elements-55df2ee5f99535f6407bacf8a0e1df64 wp-block-paragraph\"><strong>Page created:<\/strong> January 17, 2025<\/p>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-menu-links-color\">\u2764<\/mark><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>What you read on &#8220;Jeg har Kr\u00e6ft&#8221; is not a recommendation. Seek competent guidance.<\/em><\/strong><\/p>\n<\/div>\n<\/div>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Indhold<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/jegharkraeft.dk\/en\/vitamin-k\/#Dietary_Supplements_Grouped_by_Effect\" >Dietary Supplements Grouped by Effect<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/jegharkraeft.dk\/en\/vitamin-k\/#Dietary_Supplements_Alphabetical\" >Dietary Supplements Alphabetical<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/jegharkraeft.dk\/en\/vitamin-k\/#Vitamin_K_and_cancer\" >Vitamin K and cancer<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/jegharkraeft.dk\/en\/vitamin-k\/#Mechanisms_of_action_and_potential\" >Mechanisms of action and potential<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/jegharkraeft.dk\/en\/vitamin-k\/#Preclinical_and_clinical_studies\" >Preclinical and clinical studies<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/jegharkraeft.dk\/en\/vitamin-k\/#Too_much_and_too_little\" >Too much and too little<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/jegharkraeft.dk\/en\/vitamin-k\/#Dispensing_and_intake\" >Dispensing and intake<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/jegharkraeft.dk\/en\/vitamin-k\/#Benefits_of_vitamin_K\" >Benefits of vitamin K<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/jegharkraeft.dk\/en\/vitamin-k\/#Disadvantages_and_limitations\" >Disadvantages and limitations<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/jegharkraeft.dk\/en\/vitamin-k\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Dietary Supplements Grouped by Effect Dietary Supplements Alphabetical A,. B,. C,. D,. E+F,. G,. H,. I+J+K,. L,. M,. N,. O,. P,. Q,. R,. S,. T,. U+V+Z Vitamin K and cancer What is vitamin K Vitamin K is a fat-soluble vitamin that plays a crucial role in blood coagulation (clotting) and bone health [1, 2, 4, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[389,375,374],"tags":[],"class_list":["post-36694","post","type-post","status-publish","format-standard","hentry","category-supplements","category-alternative-treatments","category-treatments"],"modified_by":"Hanne Kj\u00e6r Uhlig","wpml_current_locale":"en_US","wpml_translations":[],"_links":{"self":[{"href":"https:\/\/jegharkraeft.dk\/en\/wp-json\/wp\/v2\/posts\/36694","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jegharkraeft.dk\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jegharkraeft.dk\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jegharkraeft.dk\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jegharkraeft.dk\/en\/wp-json\/wp\/v2\/comments?post=36694"}],"version-history":[{"count":2,"href":"https:\/\/jegharkraeft.dk\/en\/wp-json\/wp\/v2\/posts\/36694\/revisions"}],"predecessor-version":[{"id":36699,"href":"https:\/\/jegharkraeft.dk\/en\/wp-json\/wp\/v2\/posts\/36694\/revisions\/36699"}],"wp:attachment":[{"href":"https:\/\/jegharkraeft.dk\/en\/wp-json\/wp\/v2\/media?parent=36694"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jegharkraeft.dk\/en\/wp-json\/wp\/v2\/categories?post=36694"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jegharkraeft.dk\/en\/wp-json\/wp\/v2\/tags?post=36694"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}