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Vitamin K is a family of structurally similar, fat-soluble vitamers found in foods and marketed as dietary supplements. [1] The human body requires vitamin K for post-synthesis modification of certain proteins that are required for blood coagulation ("K" from Danish koagulation, for "coagulation") or for controlling binding of calcium in bones and other tissues. [2]
Vitamin K 1-deficiency may occur by disturbed intestinal uptake (such as would occur in a bile duct obstruction), by therapeutic or accidental intake of a vitamin K 1-antagonist such as warfarin, or, very rarely, by nutritional vitamin K 1 deficiency. As a result, Gla-residues are inadequately formed and the Gla-proteins are insufficiently active.
To avoid a vitamin K deficiency, eat foods high in vitamin K1, including leafy green veggies, broccoli, edamame, pumpkin, and pomegranate juice and those high in vitamin K2, including dark-meat ...
Newborn infants are a special case. Plasma vitamin K is low at birth, even if the mother is supplemented during pregnancy, because the vitamin is not transported across the placenta. Vitamin K deficiency bleeding (VKDB) due to physiologically low vitamin K plasma concentrations is a serious risk for premature and term newborn and young infants.
Vitamin K status and cognitive function in healthy older adults. Neurobiology Aging . Association of vitamin K with cognitive decline and neuropathology in community‐dwelling older persons.
While vitamin K deficiency in adults is rare, newborns are at greater risk due to very limited levels at birth. All newborn babies are required to receive a vitamin K shot to help prevent vitamin ...
Phytomenadione, also known as vitamin K 1 or phylloquinone, is a vitamin found in food and used as a dietary supplement. [6] [7] It is on the World Health Organization's List of Essential Medicines. [8] It is used to treat certain bleeding disorders, [7] including warfarin overdose, vitamin K deficiency, and obstructive jaundice. [7]
Of course, vitamin A is an essential piece of a healthy diet. The National Institute of Dietary Supplements recommends adult males get 900 mcg RAE and females get 700 mcg RAE of vitamin A daily ...