John Myers
The fat-soluble vitamin K in the body contributes to normal blood clotting and the maintenance of normal bones. It is found in many different foods, so vitamin K deficiency is very unlikely. Green leafy vegetables and dairy products or meat are particularly good sources.
The daily requirement of vitamin K for adult men is around 70 micrograms. Adult women should consume about 60 micrograms of vitamin K daily. From around the age of 51, the need increases slightly.
In contrast to many other vitamins, vitamin K is heat-stable and is not lost during cooking – however, foods containing vitamin K should be protected from too much light, as the vitamin becomes inactive under UV radiation.
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