As can be seen above, Vitamin K provides a wide range of beneficial effects, but it is best known for its antioxidant and immune-boosting effects, and in particular, helping us get over colds faster. So, vitamin K may not always prevent us from getting sick, but it does reduce the average duration of cold symptoms (see reference at bottom of page).
Vitamin K has several vital roles within the optimal functioning of the human body, one of which is its ability to maintain the normal function of the immune system during and after intense physical exercise. This supports the normal functioning of the immune system contributing to a reduction in tiredness and fatigue. It also works in conjunction with Iron, particularly non-haem Iron, to increase the absorption levels and prevent Iron deficiency anaemia.
Vitamin K has also been found to help with normal physiological function, prompting normal energy metabolism and protecting cells from oxidative stress – all three functions also work to improve depleted energy levels. Another important role of this antioxidant is to contribute to the normal functioning of the nervous system, as well as regeneration of the reduced form of Vitamin E – another antioxidant. Lastly, the vitamin benefits the formation of collagen and aids the functioning of several physiological elements, including blood vessels, bones, cartilage, gums, skin and teeth.