Vitamin K

Vitamin K is a nutrient that the body needs in small amounts to function and stay healthy. Vitamin K helps to form blood clots (a mass that forms when blood platelets, proteins, and cells stick together) and maintain strong bones. It is fat-soluble (can dissolve in fats and oils) and is found in green leafy vegetables, broccoli, liver, and vegetable oils. Vitamin K is also made by bacteria that live in the large intestine. Not enough vitamin K can lead to bleeding and bruising. It is a type of phylloquinone.

What is Vitamin K?

Vitamin K is a group of fat-soluble vitamins required for the synthesis of proteins needed for blood coagulation and for calcium binding in bones and other tissues.

Chemical Structure of Vitamin K

Vitamin K Physiology

Sources of Vitamin K

Vitamin K Deficiency

Vitamin K Biochemistry

Newborn Vitamin K Injections

Vitamin K Uses

Vitamin K2: Physiological Importance and Increasing Your Intake

Latest Vitamin K News and Research

Study: People with higher levels of vitamin D in the brain have better cognitive function

An estimated 55 million people worldwide live with dementia, a number that's expected to rise as the global population ages.

7 Dec 2022

DOAC use associated with lower risk of kidney complications in patients with atrial fibrillation

Swedish cohort study shows 13% (95% CI, 2-22%) lower risk of kidney function decline or kidney failure and 12% (95% CI, 3-20%) lower risk of acute kidney injury with use of direct oral anticoagulants vs. vitamin K antagonists for non-valvular atrial fibrillation.

5 Oct 2022

Formulary restrictions may increase the risk of stroke in patients with atrial fibrillation

Atrial fibrillation (AF) is a major risk factor for stroke, and for decades the anticoagulant warfarin was the standard treatment for lowering that hazard. However, numerous drug and food interactions make warfarin burdensome for patients.

10 Aug 2022

Fully reduced form of vitamin K found to efficiently inhibit ferroptotic cell death

A team of researchers at Tohoku University has reported on a novel function of vitamin K, which is generally known for its importance in blood clotting.

4 Aug 2022

Low-dose apixaban treatment reduces recurrence of venous thromboembolism compared to anticoagulant discontinuation after negative D-dimer

Patients who have suffered from a first episode of unprovoked venous thromboembolism (VTE) have an eight times higher risk of recurrence if they stop treatment after repeated negative D-dimer tests, instead of continuing with low-dose anticoagulant (apixaban).

20 May 2022

Improving our understanding of a severe pregnancy sickness (Hyperemesis Gravidarum)

News-Medical talks to Dr. Marlena Fejzo about a breakthrough in the understanding of hyperemesis gravidarum, and how it could improve maternal health around the world.

5 Apr 2022

Algal metabolites as novel drugs against viruses

A new review article published in the Journal of Biotechnology has provided information on various nutraceutical metabolites extracted from algae.

29 Mar 2022

Mechanism of fatty-acid coupled adaptive immunity in SARS-CoV-2 revealed

A new study explains how SARS-CoV-2 adapts its immunogenicity to the immune response of the host.

20 Feb 2022

Anticoagulants to prevent strokes do not provide adequate protection for hemodialysis patients

The anticoagulants currently used to prevent strokes in dialysis patients with atrial fibrillation do not provide adequate protection for this group.

15 Nov 2021

Women born with heart defects can safely become pregnant and give birth to healthy babies

Most women who are born with heart defects can safely become pregnant and give birth to healthy babies with few or minor problems if they are supported by expert medical care and counselling, according to research published in the European Heart Journal .

13 Oct 2021

CHEST releases new clinical guidelines for management of venous thromboembolism

The American College of Chest Physicians recently released new clinical guidelines for venous thromboembolism management, "Antithrombotic Therapy for VTE Disease: Second Update of the CHEST Guideline and Expert Panel," that provides 29 recommendations on 17 Patients, Interventions, Comparators, Outcomes (PICO) questions, four of which have not been addressed previously.

5 Aug 2021

Which vitamins and minerals help with COVID?

A study published in the journal Inflammopharmacology reviewed recent data related to the role of vitamins and minerals in treating COVID-19 patients. The primary goal of the review is to highlight the possible therapeutic role of vitamins A, B, C, D, E and K, and micronutrients as immunity boosters in COVID-19 patients.

18 Jun 2021

Study shows a protective association between anticoagulants and COVID-19

In a new study, researchers investigated the association between the use of oral anticoagulants and warfarin in COVID-19 disease outcomes. They published their results in a paper on the medRxiv* preprint server.

3 May 2021

Guidance on diagnosis and management of cerebral venous sinus thrombosis after a COVID-19 vaccine

Last Friday, the Centers for Disease Control and Prevention and the U.S. Food & Drug Administration lifted the pause in administration of the Johnson & Johnson (Janssen) COVID-19 vaccine in the U.S.

29 Apr 2021

Series of reviews discuss key issues in chronic kidney disease and bone disorders

Metabolic bone disease is a common complication of chronic kidney disease (CKD) and involves a broad spectrum of disorders of mineral metabolism that result in both skeletal and extra-skeletal consequences.

15 Apr 2021

New project seeks to adapt marine bioproducts into tasty vegan food ideas

Putting innovative Australian marine bioproducts into tasty vegan food ideas is the goal of a new project at the Centre for Marine Bioproducts Development, Flinders University.

22 Feb 2021

Anticoagulant drug linked to greater risk of knee and hip replacements in patients with osteoarthritis

New research presented at ACR Convergence, the American College of Rheumatology's annual meeting, shows that use of warfarin, a vitamin K drug widely prescribed to prevent blood clots, is associated with a significantly greater risk of knee and hip replacements in patients with osteoarthritis.

6 Nov 2020

Dried plum diet prevents spinal cord injury‐related bone loss

Findings from a new study among mice show a diet high in dried plum (prunes) completely prevents bone loss associated with spinal cord injury (SCI), while also restoring some of the bone lost following SCI.

6 Oct 2020

High levels of blood clotting factor V in severe COVID‐19 associated with worse outcomes

Patients hospitalized with severe COVID-19 infections who have high levels of the blood clotting protein factor V are at elevated risk for serious injury from blood clots such as deep vein thrombosis or pulmonary embolism, investigators at Massachusetts General Hospital (MGH) have found.

8 Sep 2020

ESC and EACTS develop guidelines for diagnosis and management of atrial fibrillation

ESC Guidelines for the diagnosis and management of atrial fibrillation developed in collaboration with the European Association of Cardio-Thoracic Surgery (EACTS).

31 Aug 2020

Vitamin K

Overview

Chemical Structure of Vitamin K

Vitamin K Physiology

Sources of Vitamin K

Feature Articles

Vitamin K Deficiency

Vitamin K Biochemistry

Newborn Vitamin K Injections

Vitamin K Uses

Vitamin K2: Physiological Importance and Increasing Your Intake

Latest Vitamin K News and Research

Study: People with higher levels of vitamin D in the brain have better cognitive function

DOAC use associated with lower risk of kidney complications in patients with atrial fibrillation

Formulary restrictions may increase the risk of stroke in patients with atrial fibrillation

Fully reduced form of vitamin K found to efficiently inhibit ferroptotic cell death

Low-dose apixaban treatment reduces recurrence of venous thromboembolism compared to anticoagulant discontinuation after negative D-dimer

Improving our understanding of a severe pregnancy sickness (Hyperemesis Gravidarum)

Algal metabolites as novel drugs against viruses

Mechanism of fatty-acid coupled adaptive immunity in SARS-CoV-2 revealed

Anticoagulants to prevent strokes do not provide adequate protection for hemodialysis patients

Women born with heart defects can safely become pregnant and give birth to healthy babies

CHEST releases new clinical guidelines for management of venous thromboembolism

Which vitamins and minerals help with COVID?

Study shows a protective association between anticoagulants and COVID-19

Guidance on diagnosis and management of cerebral venous sinus thrombosis after a COVID-19 vaccine

Series of reviews discuss key issues in chronic kidney disease and bone disorders

New project seeks to adapt marine bioproducts into tasty vegan food ideas

Anticoagulant drug linked to greater risk of knee and hip replacements in patients with osteoarthritis

Dried plum diet prevents spinal cord injury‐related bone loss

High levels of blood clotting factor V in severe COVID‐19 associated with worse outcomes

ESC and EACTS develop guidelines for diagnosis and management of atrial fibrillation

Ask the Expert: 7 Questions about Colorectal Cancer & Non-invasive Fecal DNA Testing

Snapping at new biotech breakthroughs with Gator Pro

Realizing the Importance of Medical Electronic Devices

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Vitamin K

Overview

Feature Articles

Vitamin K Deficiency

Vitamin K Biochemistry

Newborn Vitamin K Injections

Vitamin K Uses

Vitamin K2: Physiological Importance and Increasing Your Intake

Latest Vitamin K News and Research

Ask the Expert: 7 Questions about Colorectal Cancer & Non-invasive Fecal DNA Testing

Snapping at new biotech breakthroughs with Gator Pro

Realizing the Importance of Medical Electronic Devices

Life Science Microscopy eBook

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