**12. Conclusion**

Studies suggest that vitamin K has a role in bone metabolism and it may contribute in maintaining BMD and diagnosing osteoporosis. Studies have demonstrated that in the healthy population, all clotting factors are synthesized in their active form, whereas the synthesis of other Gla proteins is sub-optimal in non-supplemented subjects. Prolonged subclinical vitamin K deficiency is a risk factor for osteoporosis. Present recommendations for dietary intake are based on the daily dose required to prevent bleeding. Scientific data suggests that new, higher recommendations for vitamin K intake should be formulated.
