This is a follow up on our previous post on nutraceuticals and heart disease
In a nutshell, vitamin K controls where the calcium is going to take hold. On the bone, where it should, or on endothelial (heart and blood vessels) tissues, where it should not.
The consumption of vitamin K2 in the the MK-7 form raise the its blood serum level, as supplementing with MK4 form did not raise it blood serum levels.
Study conclusion: If you want your vitamin K2 to be transported to your body as a whole, you should take it as MK-7 form
Talk to your nutritionist