Originally Posted by lildog
So it begs the question if you don't get much if any K2 from what you eat do you need to supplement with it?
Also, how many people here have had their Vitamin D levels checked and rechecked to figure out if and how much D3 supplementation they need?
Butter oil is the best supplement for the MK-4 version of K2, but it's expensive. You don't need to supplement with MK-4 and you'll probably live a long and healthy life without it. But it is protective against osteoporosis, arterial calcification, and other bone or artery related problems (and probably other things we don't know about too). Take it when you can get it and otherwise don't worry about it too much, unless you wanna spend the $60/month on butter oil. If you can get grassfed butter, ghee (which doesn't bother lactose intolerant people), milk, or cheese without too much hassle -- go for it.