look up *vitamin k* and *arterial plaque* and *heart disease*
Many people are deficient in all of the fat soluble vitamins due to the crappy, refined, Genetically-Modified-Organisms oils sold in the stores... and we must assume that they are used in ALL restaurant foods unless specifically stated.
While I am not a fan of vegan, or vegetarianism for *most* people in part, because of this very issue... high quality, healthy fats loaded with A, D, E, and K, in the most bioavailable forms, for all people are found in free range animal products, poultry products, and wild, cold water fish, fats...