Vitamin K

Vitamin K is a fat-soluble vitamin.  Fat-soluble vitamins can be stored in the body for months and even years.  They are stored in the liver and do not need to be eaten in large amounts.



  • Making blood clots.
  • Maintaining bone health.



  • Cereals.
  • Green leafy vegetables, e.g. green peas, beans, broccoli and spinach.
  • Vegetable oils.



Deficiency is rare as it is made by the body.  Signs of deficiency include easy bruising and bleeding.  The blood may take longer to clot.



There is not enough evidence to draw conclusions on possible effects of taking too much vitamin K.


Dietary Reference Value (DRV):

  • Teenagers: 0.045mg
  • Males: 0.075mg
  • Females: 0.065mg

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