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. . . the vitamin K we get from greens and supplements is K1, I think. From what I've read, it's K2 that we need to prevent vascular calcification and to build bones. Whether or not we can get enough or any at all (from food or supplements) while on coumadin is what we need to know. And also...

Excellent suggestions. Thank you so much for these, Lyn!

Older than seventy.

I totally agree! I eat my greens and get my supply of K1 that way, I imagine. The research seems to be saying that I may need more of K2 than I get from food. Older people don't absorb their nutrients that well from food. I am an older person. :-)

I really hope you are right about the bone and vascular benefits of K2 after balancing the coagulant/anti-coagulant effect of it with warfarin. Now if I could only find the MK-4 type of K2 at a reasonable price. Back to more research (especially on MK-7! Thanks for your input.

I thought these two ideas contradict each other: 1. both K1 and K2 are inhibited by warfarin and 2. Vitamin K2 supplementation. . .may provide a novel method to protect the vasculature while allowing anticoagulation (for people on warfarin) I thought that if warfarin inhibits the action of...

Initially I was concerned about the medical news stating that calcium (not warfarin) contributed to calcification of blood vessels. I take calcium for osteoporosis. Vitamin K2 (not the kind from greens) is supposed to counteract the calcification of the arteries. My concern then became, can I...

I think the warfarin/osteoporosis link is relatively new. (My Gynecologist mentioned it to me, and then I found more information online.)

Yes, so I have discovered; there is much to learn! MK-4 is the kind of K2 used in the Japanese studies on bone strength. It is very expensive. I only found one brand online. I will wait, and read, and wait. I have a home monitor so if I ever do take K2, I have an easy way to watch my INR...

Thank you Cooker, Dick0236, Protimenow, and Lyn, I found the links particularly helpful. It seems that the risks for vascular calcification and declining bone density may have genetic causation and may not totally be caused by, but rather increased by, warfarin. In Lyn's first link the author...

Hello, Everyone! Last year several of you convinced me to eat greens and "dose the diet", which I eventually did and am grateful for your advice. Now I have a related question. (I think this is the right forum for it.) Since warfarin opposes (or inhibits?) the clotting factors in Vitamin K...