Vitamin K helps blood coagulate properly, states the Harvard School for the Public Health. In fact, vitamin K is responsible for creating four of the 13 proteins needed for blood clotting in the body. Vitamin K also helps build strong bones and prevents calcium build up in the arteries.
Research from the Arthritis Foundation also suggests that vitamin K attacks the inflammatory cells that cause rheumatoid arthritis. Higher intakes of vitamin K are also associated with lower risks for non-Hodgkin lymphoma, states Medical News Today.
On the other hand, low levels of vitamin K are related to low bone density and osteoporosis, as well as higher risks for osteoarthritis, reports the University of Maryland Medical Center. Vitamin K deficiencies can also cause bruising and bleeding gums. Although vitamin K deficiency is rare, other signs and symptoms of a deficiency include heavy menstrual bleeding, anemia, nose bleeds and coronary artery disease.
Good sources of vitamin K include green leafy vegetables, such as kale, Swiss chard, cabbage and spinach. Broccoli, cauliflower, liver and eggs are also sources of vitamin K. Intestinal bacteria also produce another form of vitamin K.