Vitamin K1, K2 Supplements - Foods, Sources, Information, Side Effects - Page 2
Most multi-vitamins don't contain any vitamin K at all. The ones that contain K do not contain enough for optimal health. Considering the importance of this vitamin, it's reasonable to ask yourself if you're getting enough.
Taking Vitamin K
High amounts of vitamin K will not cause your
blood to over-coagulate. Coagulation proteins only have a certain number of
spaces for vitamin K. Once those spaces are filled, vitamin K cannot affect
coagulation proteins. Dr. Cees Vermeer of Maastricht University in the
Netherlands compares it to what happens when you take
C. Vitamin C is required for the hydroxylation of collagen (hydroxylation
is similar to carboxylation). If you take too much vitamin C, however, you
don't get too much collagen in the same way that if you take too much K you
don't get too much coagulation. The processes are self-limiting.
If you want to get your vitamin K level tested, request the osteocalcin test. It is much more reliable than coagulation tests. The osteocalcin test measures how much carboxylated osteocalcin you have. Since carboxylation is dependent on vitamin K, this test will give you a good idea of your vitamin K status and whether or not you're headed for health problems and the side effects associated with deficiency.
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