[Jamestown1630]

Menaquinone - in forms MK4 and MK7, which some nutritionists have come to believe are important in calcium metabolism:

https://en.wikipedia.org/wiki/Vitamin_K2

https://www.healthline.com/nutrition/vitamin-k2#section2

[lizma2]

Never heard of this and it's been 30 years since I read biochem stuff, gotta do some studying.

But the big K food... Natto.

"Nattō may be an acquired taste because of its powerful smell, strong flavor, and slimy texture." LOL! I do Kimchi, but I'm not sure I can go there!

Thanks much for the info. Love science!