>...Just take half a pound of spinach and boil it, when you eat it, it'll be about the size of a medium bowl. That will be about 50 calories and contain 1200% o

>...Just take half a pound of spinach and boil it, when you eat it, it'll be about the size of a medium bowl. That will be about 50 calories and contain 1200% of your daily vitamin K needed! It really isn't that simple. One issue is that it doesn't matter how much is in spinach if you don't absorb it. >...Circulating phylloquinone levels after spinach with and without butter were substantially lower (7.5- and 24.3-fold respectively) than those after taking the pharmaceutical concentrate. Moreover, the absorption of phylloquinone from the vegetables was 1.5 times slower than from Konakion. https://www.ncbi.nlm.nih.gov/pubmed/8813897 https://www.ncbi.nlm.nih.gov/pubmed/8813897 And while those vegetables will get you some K1, they won't get you K2 which is important for how calcium is handled in the body. >...We examined whether dietary intake of phylloquinone (vitamin K-1) and menaquinone (vitamin K-2) were related to aortic calcification and coronary heart disease (CHD) in the population-based Rotterdam Study. >...The relative risk (RR) of CHD mortality was reduced in the mid and upper tertiles of dietary menaquinone compared to the lower tertile [RR = 0.73 (95% CI: 0.45, 1.17) and 0.43 (0.24, 0.77), respectively]. Intake of menaquinone was also inversely related to all-cause mortality [RR = 0.91 (0.75, 1.09) and 0.74 (0.59, 0.92), respectively] and severe aortic calcification [odds ratio of 0.71 (0.50, 1.00) and 0.48 (0.32, 0.71), respectively]. Phylloquinone intake was not related to any of the outcomes. These findings suggest that an adequate intake of menaquinone could be important for CHD prevention. http://jn.nutrition.org/content/134/11/3100.long http://jn.nutrition.org/content/134/11/3100.long