to read more please go to:
http://psychcentral.com/news/2012/05...nts/38597.html

Hopeful research!! One more supplement or food to consume.
I have taken the pill form of Natto before and I understand that cheese curds are a good source also although less potent by two thirds.
Thanks for picking up my spirits with one more thing to try.

Most think of Vitamin K as relating to blood clotting/coagulation, which would make sense as it was named for that (the German term starting with the letter "k"...koagulation) but it appears that it effects so much more.

Here, scientists explain a bit more about how vitamin d is a membrane bound mitochondrial electron carrier, and rescues PINK1 deficiency (same thing that started this thread, but a different source): http://www.sciencemag.org/content/ea...cience.1218632

The Linus Pauling Institute also lists vitamin K as a cofactor for an enzyme that catalyzes carboxylation of glutamic acid, which is critical to the calcium-binding function of vitamin-K dependent proteins.

More facts:
Vitamin K is fat soluble, very little is stored in the body, it is rapidly depleted. It is involved with Gas6, which is a vitamin K dependent protein discovered in 1993 which has cell-signalling activites (I would argue this includes cell death signals).

Best food sources are dandelion greens, kale, spinach, collards, parsley. Remember that Dr. Wahls ate and still eats massive amounts of kale. Granted, it took months before she noticed improvement, but she did improve and her MS went into remission or, as some would say, was cured.

Has anyone tried K2 yet? IF so, how much and how often, and what results so far.

So, its been over 2 years since this was posted. Is there any update? I could not find any more studies on vit. K and PD. Has anyone tried vitamin K?

I've used vitamin K for years, even before I got PD. It has no effect that I can discern.

Interesting information on vitamin K1, K2 and K3, how much to take (or not) and K2 interplay with Vitamin D and Calcium. And again bacteria in our gut seems to be involved.

"Vitamin K2, also called menaquinone, is made by the bacteria that line your gastrointestinal tract; K2 goes straight to your blood vessel walls, bones, and tissues other than your liver".

"When you take vitamin D, your body creates more of these vitamin K2-dependent proteins, the proteins that will move the calcium around. They have a lot of potential health benefits. But until the K2 comes in to activate those proteins, those benefits aren't realized. So, really, if you're taking vitamin D, you're creating an increased demand for K2".

"If you opt for oral vitamin D, you need to also consume in your food or take supplemental vitamin K2".

"Vitamin K2 can be broken into two additional categories, called:
MK-4 (menaquinone-4), a short-chain form of vitamin K2 found in butter, egg yolks, and animal-based foods
MK-7 (menaquinone-7), longer-chain forms found in fermented foods. There's a variety of these long-chain forms but the most common one is MK-7. This is the one you'll want to look for in supplements, because in a supplement form, the MK-4 products are actually synthetic. They are not derived from natural food products containing MK-4".


http://articles.mercola.com/sites/ar...itamin-k2.aspx