30 Foods Rich in Vitamin K

Contents:

• What is vitamin K used for?
• What are the benefits of vitamin K?
• How much vitamin K should you get per day?
• What foods contain vitamin K?
• Do pregnant women need more vitamin K?
• Should you be concerned about vitamin K deficiency?
• Is an overdose of vitamin K dangerous?

What is vitamin K for?

Vitamin K was discovered in 1929 by Danish biochemist Carl Peter Henrik Dam while studying the effects of fats on animals. During his experiments, the scientist discovered that chickens that did not receive fat in their diet developed bleeding that was not treatable with the vitamins known at the time. After identifying this substance, Dam named it vitamin K, based on the German word "Koagulation", which translates as "clotting". Vitamin K plays an important role in blood clotting and maintaining bone health.

There are two forms of the vitamin, each of which plays an important role in the body. The first form of the vitamin is actively involved in metabolism and helps maintain the immune system. The second form of the vitamin, in turn, is responsible for the absorption of minerals and improving overall health. Understanding the differences between these forms of the vitamin will help you choose the most appropriate supplements to maintain health.

• K1 is phylloquinone, which comes from plants [2].
• K2 is menaquinone, formed in the human body by bacteria in the colon [3].

Scientists have developed a synthetic analogue of menadione, called K3. However, this analogue turned out to be toxic to humans, which limited its use. As a result, K3 began to be used as a food supplement for animals, ensuring safety for human health and helping to improve the quality of feed.

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Vitamin D plays a key role in maintaining the body's health, including strengthening bones and the immune system. Including foods rich in this important vitamin in the diet can help avoid its deficiency. Here are 11 foods high in vitamin D.

Fatty fish like salmon, mackerel, and tuna are excellent sources of vitamin D. Egg yolks also contain this vitamin, making them a healthy addition to your diet. Beef liver, although less popular, can also provide essential vitamin D.

Dairy products like milk and yogurt are often fortified with vitamin D, making them a good choice for maintaining health. Cookies and cereals, which are also fortified with this vitamin, can be an easy way to increase your intake.

Mushrooms, especially those exposed to ultraviolet light, also contain vitamin D and can be a good addition to a vegetarian menu.

Don't forget about fish oil, which is a concentrated source of vitamin D and can be beneficial for those who don't eat fish.

Eating a varied diet that includes these foods will help you get the vitamin D you need and maintain overall health.

What are the benefits of vitamin K?

Vitamin K plays a key role in the carboxylation reaction, which involves adding a carboxyl group (-COOH) to a molecule. This process can be described as adding a "chemical label," allowing the molecule to become more acidic and generally increasing its solubility in water. Vitamin K is also important for normal body function because it is involved in the synthesis of proteins needed for blood clotting and bone health. A deficiency can lead to a variety of problems, including bleeding disorders and an increased risk of osteoporosis. Ensuring adequate levels of vitamin K in the diet promotes overall health and disease prevention.

Vitamin K, discovered by Henrik Dam, long remained a scientific mystery, as its precise mechanism of action was unknown. In 1974, researchers made a significant discovery when they identified the amino acid Gla in prothrombin, a key blood clotting factor known as factor II. This discovery helped us understand how vitamin K helps stop bleeding. Scientists subsequently discovered that phylloquinone, a form of vitamin K, is necessary for the activation of four clotting factors—II, VII, IX, and X—now known as vitamin K-dependent factors. Thus, vitamin K plays an important role in maintaining normal blood clotting and preventing bleeding.

Many people believe that calcium alone is enough for healthy and strong bones. However, this is not entirely true. Bone strength also depends on calcium-binding proteins, such as osteocalcin. Osteocalcin is capable of binding up to five calcium ions and plays a vital role in bone mineralization. However, its effectiveness is directly related to vitamin K levels in the body. A vitamin K deficiency results in the formation of a defective osteocalcin molecule, which negatively impacts its ability to perform the functions necessary for maintaining strong bones. Therefore, bone health requires not only calcium intake but also adequate vitamins and minerals, including vitamin K.

Vitamin K plays a vital role in maintaining bone health by activating osteoblasts, the cells responsible for forming new bone. It also inhibits the activity of osteoclasts, the cells that destroy bone structure. Thus, vitamin K promotes strong bones and maintains a balance between bone formation and destruction.

Vitamin K2 plays an important role in protecting blood vessels from calcification. It activates proteins that prevent calcium accumulation in arteries, reducing the risk of diseases associated with atherosclerosis. Atherosclerosis is a serious threat to vascular health. This process begins with the accumulation of cholesterol on the artery walls, leading to the formation of plaques. Over time, these plaques enlarge, become dense, and become saturated with calcium, making them hard and dangerous for normal blood circulation. Maintaining adequate levels of vitamin K2 in the body can help prevent the development of atherosclerosis and maintain vascular health. Japanese researchers from Tohoku University note in their review that foods rich in vitamin K may promote more effective blood sugar control in patients with type 2 diabetes. This type of diabetes develops when the body's cells lose sensitivity to insulin, leading to difficulty using glucose, even with sufficient insulin. Including foods containing vitamin K in your diet can be an important step in managing your health and preventing diabetes-related complications.

Vitamin K helps restore cellular sensitivity to insulin through its effect on the protein osteocalcin. Osteocalcin plays a key role not only in maintaining bone health but also in stimulating the production of adiponectin in adipose tissue. Adiponectin, in turn, improves glucose uptake by cells, which is important for maintaining normal blood sugar levels and preventing the development of insulin resistance. Including vitamin K in your diet can be beneficial for improving metabolism and overall metabolic activity.

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Insulin Resistance: What It Is, How It Develops, and What Are the Consequences

Insulin resistance is a condition in which the body's cells become less sensitive to insulin, the hormone responsible for regulating blood sugar levels. This causes the pancreas to produce more insulin to compensate for its decreased effectiveness.

The development of insulin resistance is associated with several factors, including genetic predisposition, excess weight, a sedentary lifestyle, poor diet, and stress. This process can lead to a number of serious diseases, including type 2 diabetes, cardiovascular disease, and other complications.

It is important to understand that insulin resistance is preventable and manageable. A balanced diet, regular physical activity, and maintaining a healthy weight play a key role in maintaining normal insulin sensitivity. If you suspect you may have insulin resistance, you should consult a specialist for diagnosis and recommendations for lifestyle adjustments.

A study conducted by Nancy Press and colleagues from the University of Montreal in Canada found a link between vitamin K levels and memory in older adults. The study participants included 320 healthy men and women aged 70 to 85 years. Scientists measured the level of phylloquinone, a form of vitamin K, in the participants' blood and compared it with their performance in verbal episodic memory, which is responsible for remembering events and knowledge. The results showed that those with high phylloquinone levels had significantly better memory. Although the exact mechanisms behind this relationship have not yet been established, it is suggested that vitamin K may positively influence brain tissue through its antioxidant properties. These findings highlight the importance of vitamin K for maintaining cognitive health in old age. Neurologists from the United States conducted an experiment in which they found that nerve cells in the cerebral cortex treated with nanodoses of vitamin K exhibited increased protection against oxidative stress. These results highlight the potential role of vitamin K in maintaining nervous system health and protecting cells from damage. The study opens up new prospects for the use of vitamin K in neuroprotection and the prevention of neurological diseases.

How much vitamin K do you need per day?

The Russian Ministry of Health has set the daily iodine intake for adults at 120 mcg, while for children this intake varies from 30 to 120 mcg. The US National Institutes of Health (NIH) provides more detailed information on the recommended intakes for children. Proper iodine intake is important for health, since this element is necessary for the normal functioning of the thyroid gland and overall metabolism in the body.

Which foods contain vitamin K

The US National Institutes of Health (NIH) conducted a study to determine the vitamin K content in various foods. This list includes 30 foods, both plant and animal, rich in vitamin K. Vitamin K plays an important role in maintaining health, including blood clotting and bone health. Understanding the vitamin K content of foods can help people optimize their diets and improve overall health. Do pregnant women need more vitamin K? Taking a vitamin and mineral supplement during pregnancy is recommended to support the health of both mother and child. However, the need for additional vitamin K is less common, and this is due to its properties. Vitamin K plays an important role in blood clotting and bone health. However, most women get enough of this vitamin from food, including green leafy vegetables, broccoli, and vegetable oils. In some cases, such as certain medical conditions or low-fat diets, vitamin K supplementation may be necessary. It is important to consult a physician before starting any supplementation to ensure the safety and health of both mother and unborn baby.

• The fetus absorbs almost no maternal vitamin. Vitamin K does not cross the placenta well, leaving fetal levels low but sufficient for fetal needs [13].
• Food sources are sufficient. Most pregnant women who eat a balanced diet maintain normal vitamin K levels. Therefore, expectant mothers do not need supplementation [14].
• Overdose is undesirable. It is not recommended for pregnant women to stock up on vitamin K, as high doses can affect blood clotting parameters, especially if the woman is taking blood-thinning medications [14].

Should you be concerned about vitamin K deficiency?

Vitamin K can be restored in the body through the vitamin K cycle, which helps minimize its loss even when dietary intake is insufficient. This cycle begins with the absorption of vitamin K from foods. The inactive form of vitamin K is converted to the active hydroquinone, which is then converted to the epoxide form. Ultimately, the epoxide is reduced to quinone. This process ensures a stable concentration of vitamin K in the body's tissues, which is important for maintaining health and normal functioning.

Vitamin K deficiency occurs in two main cases: either its absorption is impaired, or the body requires more vitamin K than it receives from food. It is important to understand that a lack of this vitamin can negatively impact health, as vitamin K plays a key role in blood clotting and maintaining bone health. To prevent deficiency, it is important to include foods rich in vitamin K in the diet, such as green leafy vegetables, broccoli, and fermented foods.

Hypovitaminosis K can be caused by various factors. One of the main causes is insufficient consumption of foods rich in vitamin K, such as green leafy vegetables, broccoli, and cabbage. Hypovitaminosis can also develop due to impaired absorption of the vitamin in the intestine, which can occur with certain diseases, such as celiac disease or liver disease. Taking antibiotics can reduce vitamin K levels because they can disrupt the balance of intestinal microflora responsible for its synthesis. Additionally, low vitamin K levels can be a result of a diet low in fat, as this vitamin is fat-soluble. It's important to maintain vitamin K balance to avoid the consequences of hypovitaminosis K, which can lead to blood clotting problems and other serious conditions.

• small intestinal and liver diseases;
• gluten intolerance;
• problems with bile secretion [16];
• long-term antibiotic therapy;
• taking weight loss drugs (orlistat);
• kidney pathology [17];
• lack of fat in the diet [4];
• vomiting and diarrhea.

Physiological vitamin K deficiency is most common in newborns. In full-term babies, vitamin K levels in the body are usually sufficient to prevent bleeding. However, premature babies are at greater risk, so they are prescribed vitamin K prophylactically to reduce the likelihood of serious bleeding. Ensuring newborns receive adequate levels of vitamin K is important, as it promotes normal blood clotting and prevents potential complications.

According to historical records, Henrik Dam, the discoverer of vitamin K, played a key role in saving Queen Margrethe II of Denmark from hemorrhagic disease of the newborn. Margrethe was born during the height of World War II, when many infants suffered and died from dangerous bleeding. Dam, quickly moving from theory to practice, began administering vitamin K to newborns to prevent serious bleeding. One of his first patients was Margrethe, who received a prophylactic vitamin K injection immediately after birth. This event marked an important step in the fight for the health of newborns and demonstrated the importance of vitamin K in the prevention of hemorrhagic diseases.

Is an overdose of vitamin K dangerous?

Vitamin K supplements, although considered safe, can pose health risks when consumed in excess. Excess phylloquinone can increase free radical levels, which can negatively affect the body. Free radicals are unstable molecules containing an unpaired electron that can cause DNA damage and alter the structure of proteins, fats, and carbohydrates. High levels of reactive oxygen species increase the risk of developing various diseases. Therefore, it is important to follow recommended vitamin K dosages and consult a doctor before taking supplements.

Vitamin K plays an important role in the body, especially in blood clotting. However, its interaction with anticoagulants, which are designed to suppress blood clotting and prevent blood clots, requires special attention. Anticoagulants can weaken the action of vitamin K, increasing the risk of bleeding. At the same time, excess consumption of foods rich in vitamin K can reduce the effectiveness of anticoagulants. Therefore, it is extremely important for people taking these medications to maintain a balanced diet that will not significantly increase vitamin K levels, but also will not lead to a deficiency. A proper diet will help maintain a healthy vitamin K balance and reduce the risk of complications.

Information sources play a key role in the process of finding and analyzing data. To ensure the accuracy and relevance of data, it is important to use reliable and authoritative sources. These may include scientific publications, specialized studies, official statistical reports, and data from recognized organizations. When selecting sources, it is necessary to consider their reputation, citations, and the level of expertise of the authors. Using high-quality sources contributes to the formation of informed conclusions and informed decision-making based on facts. Proper use of source data can improve the overall effectiveness of research and ensure the reliability of the results.

Caren M. Gundberg, in her article "Vitamin K and Bone: Past, Present, and Future," published in the Journal of Bone and Mineral Research, Volume 24, Issue 6, June 1, 2009, examines the importance of vitamin K for bone health. The article discusses the historical aspects of vitamin K research, its current role in maintaining bone mass, and potential directions for future research. Vitamin K is involved in bone metabolism, promotes mineralization, and may play a role in the prevention of osteoporosis. Research suggests that adequate vitamin K intake can improve bone health and reduce the risk of fractures. The article is available at the following DOI: https://doi.org/10.1359/jbmr.090312.

The Institute of Medicine (US) Panel on Micronutrients presented recommendations for daily intake of vitamins and minerals, including vitamin A, vitamin K, and trace elements such as arsenic, boron, chromium, copper, iodine, iron, manganese, molybdenum, nickel, silicon, vanadium, and zinc. These data were published in Washington at the US National Academy of Sciences in 2001. The guidelines are intended to optimize diet and ensure health, emphasizing the importance of the correct balance of micronutrients for the body's functioning.

Mladěnka P., Macáková K., Kujovská Krčmová L., Javorská L., Mrštná K., Carazo A., Protti M., Remião F., Nováková L. and OEMONOM researchers (2022) examine important aspects of vitamin K. The article discusses the sources of this vitamin, its physiological role, kinetics, consequences of deficiency, detection methods, therapeutic use, and potential toxicity. Vitamin K plays a key role in maintaining health, influencing blood clotting and bone metabolism. Understanding its functions and sources can help prevent diseases associated with deficiency. The article was published in the journal Nutrition Reviews and is available at DOI: https://doi.org/10.1093/nutrit/nuab061.

Eugeniusz Józef Kucharz, Marcin Stajszczyk, Anna Kotulska, Marek Brzosko, Piotr Leszczyński, Katarzyna Pawlak-Buś, Włodzimierz Samborski, and Piotr Wieland examine the role of vitamin K2 in bone metabolism and various pathophysiological processes. The article discusses the use of vitamin K2 in the prevention and treatment of diseases associated with bone tissue impairment. The study was presented at the Rheumatology Forum 2018, issue 4(2), pages 71–86. Vitamin K2 plays a key role in maintaining bone health and may be an important component in the treatment of osteoporosis and other diseases. Akbari S. and Rasouli-Ghahroudi A. A. in their work "Vitamin K and Bone Metabolism: A Review of Recent Evidence from Preclinical Studies" examine the effects of vitamin K on bone health. The article was published in the journal Biomed Research International in 2018 and is available at DOI: 10.1155/2018/4629383. In this review, the authors analyze current research, highlighting the importance of vitamin K in maintaining bone mass and preventing osteoporosis. Preclinical data provide evidence for the vitamin's potential mechanisms of action, its role in bone mineralization, and interactions with other nutrients. The studies highlight the need for further clinical trials to confirm these findings and their application in the treatment of bone diseases.

In their study, Yu. V. Pankratova, E. A. Pigarova, and L. K. Dzeranova examine vitamin K-dependent proteins such as osteocalcin and matrix Gla protein, as well as their influence outside of bone tissue. In an article published in the journal "Obesity and Metabolism" in 2013, the authors provide a detailed analysis of the role of these proteins in metabolic processes and their relationship to health. Vitamin K and its derivatives play an important role in maintaining bone and vascular health, making their study relevant in the context of modern issues of metabolism and obesity.

A study by James J. DiNicolantonio, Jaikrit Bhutani, and James H. O'Keefe, titled "The Health Benefits of Vitamin K," published in the journal Open Heart in 2015, examines key aspects of the influence of vitamin K on human health. Vitamin K plays an important role in blood clotting, maintaining bone health, and may have a positive effect on the cardiovascular system. The study emphasizes that vitamin K deficiency can lead to various health problems, including poor bone health and an increased risk of cardiovascular disease. The study emphasizes the importance of including foods rich in vitamin K, such as green leafy vegetables, in the diet to maintain health and prevent disease.

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Ho H-J, Komai M, Shirakawa H. in their mini-review discuss the positive effect of vitamin K status on glycemic regulation and diabetes mellitus. The article examines the mechanisms of action of vitamin K, its role in metabolic processes and potential benefits for patients with diabetes. The study was published in the journal Nutrients in 2020 (Volume 12, Issue 8, Article 2485). DOI: https://doi.org/10.3390/nu12082485. This review highlights the importance of vitamin K as a potential component in the strategy for managing diabetes and maintaining normal blood sugar levels.

Presse N., Belleville S., Gaudreau P., et al. examined the association between vitamin K status and cognitive function in healthy older adults. Their study, published in the journal Neurobiology of Aging in 2013, examines findings showing how vitamin K levels may influence cognitive function. The article highlights the importance of maintaining optimal levels of this vitamin to preserve mental performance in old age. DOI: 10.1016/j.neurobiolaging.2013.05.031.

Li J., Lin J. C., Wang H., et al. present a new study that highlights the important role of vitamin K in protecting developing oligodendrocytes and neurons from oxidative damage. In an article published in the journal «Journal of Neuroscience» In 2003, the authors describe the mechanisms by which vitamin K helps maintain healthy nerve cells. These findings may have significant implications for understanding neurobiology and developing new approaches to treating neurological diseases. DOI: 10.1523/JNEUROSCI.23-13-05816.2003.

Methodological recommendations MP 2.3.1.0253-21 "Norms of physiological requirements for energy and nutrients for various groups of the population of the Russian Federation" were approved by the Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing on July 22, 2021. These recommendations serve as the basis for determining the energy and nutritional needs of various categories of the population, which helps to improve the health and quality of life of citizens. The focus is on individual characteristics, including age, gender, level of physical activity and health status, which allows for the development of more accurate and effective diets. Recommendations are aimed at ensuring a balanced diet that helps prevent disease and maintain optimal energy levels for daily living.

The National Institutes of Health provides a fact sheet on vitamin K for healthcare professionals. This document provides detailed information on the role of vitamin K in the body, its sources, daily intakes, and the potential risks of deficiency. Vitamin K plays a key role in blood clotting and maintaining bone health. It is important for healthcare professionals to have up-to-date information on vitamin K to advise patients on appropriate dietary and preventive measures.

The EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA), led by Turk D. and Bresson J.L., presented reference intake values ​​for vitamin K. A paper published in the EFSA journal in May 2017 examines the recommendations for daily intake of this important vitamin. The study highlights the importance of vitamin K for health, including its role in blood clotting and bone maintenance. The article is available at DOI: 10.2903/j.efsa.2017.4780.

Shahrook S., Ota E., Hanada N., and other researchers conducted a systematic review and meta-analysis on vitamin K supplementation during pregnancy to improve outcomes. The results of their work were published in the journal Scientific Reports in 2018. This study examined the potential benefits of vitamin K for maternal and child health, as well as its impact on various perinatal outcomes. The full text of the study can be found at the following link: https://doi.org/10.1038/s41598-018-29616-y.

Eruslanova K. A., Onuchina Yu. S., Ivannikova E. V., Dudinskaya E. N. in the article "Vitamin K and Age-Associated Diseases", published in the Russian Journal of Geriatric Medicine in 2022, examine the effect of vitamin K on age-related diseases. The authors analyze the role of this vitamin in maintaining the health of older people and its potential benefits in the prevention of various age-related pathologies. The study emphasizes the importance of vitamin K in the diet of older people to improve quality of life and reduce the risk of chronic diseases. For more detailed information, please refer to the article at DOI: 10.37586/2686-8636-4-2022-236-249.

In the article "Vitamin K effects in human health: new insights beyond bone and cardiovascular health," published in the journal J Nephrol in 2020, authors Fusaro M., Gallieni M., Porta C., and others examine the impact of vitamin K on human health. The study highlights the importance of vitamin K not only for bone and cardiovascular health, but also for other aspects of health. In particular, new data on its role in metabolism and the prevention of various diseases are discussed. Vitamin K, with its many functions, is becoming increasingly relevant in the fields of medicine and nutrition. For more detailed information about the study results and its implications, you can read the full article at: https://doi.org/10.1007/s40620-019-00685-0.

Cozzolino M. G., Mangano M., Galassi A., Ciceri P. E., Messa P., and Nigwekar S. U. discuss the role of vitamin K in the context of chronic kidney disease in their 2019 article titled "Vitamin K in Chronic Kidney Disease" published in the journal Nutrients. The study emphasizes the importance of vitamin K for kidney health and its potential benefits in chronic disease management. Vitamin K may play a key role in preventing complications associated with chronic kidney disease, including vascular calcification and osteodystrophy. Given the growing number of patients with chronic kidney disease, understanding the effect of vitamin K on their condition may open up new opportunities to improve quality of life and treatment.

Gordeeva O. B., Tepaev R. F., Botvinyeva V. V., Botvinev O. K., Simonova O. I., Gorinova Yu. V. consider vitamin K-dependent hemorrhagic conditions in children after the newborn in their work. The article was published in the journal "Hematology and Transfusiology" in 2016, volume 61, issue 1, pages 54-56. DOI 10.18821/0234-5730-2016-61-1-54-56. The study emphasizes the importance of vitamin K in the prevention and treatment of hemorrhages in children, emphasizing the clinical aspects and the need for timely diagnosis.

Dyachenko A. I., Rodin I. A., Krasnova T. N., Klychnikov O. I., and Nefedova L. N. investigate the effect of vitamin K on cellular processes and its significance in neurodegenerative diseases. The article, published in the journal "Advances in Biological Chemistry" in 2024, volume 64, pages 117-142, examines the mechanisms of action of vitamin K and its potential therapeutic effects. Vitamin K plays a key role in maintaining cellular health and may be associated with the development of various neurodegenerative diseases. The study highlights the importance of vitamin K in the prevention and treatment of these diseases, as well as the need for further research in this area.

Krylov A. Yu., Shulutko A. M., Petrovskaya A. A., Prasolov N. V., and Khmyrova S. E., in their article "Experience in Treating Bleeding and Recurrent Venous Thromboembolic Complications Developed During Vitamin K Antagonist Therapy," examine important aspects of treating complications that arise during anticoagulant therapy. The article, published in the journal "Phlebology" in 2018, covers issues related to venous thromboembolism and provides recommendations for the prevention and treatment of bleeding. This article is a useful resource for phlebology and angiology professionals seeking to improve treatment outcomes for patients with venous thromboembolic complications.