Yes, most people are deficient in vitamin K2 because it is found mostly in certain fermented foods and pasture-raised animal products. Before refrigeration and confined animal feeding operations, people ate a lot of fermented foods and all animals were pasture-raised, so there was little vitamin K2 deficiency. Not so now.
People also confuse vitamin K2 with vitamin K1, which is related to blood clotting. Vitamin K1 is abundant in greens, and in pasture-raised animals K1 is converted to K2 in their digestive tracts. That doesnât happen much in the human digestive tract.
Dr. Kate Rheaume-Bleue wrote a book, Vitamin K2 and the Calcium Paradox, in which she describes the benefits for the heart, bones and teeth, the brain and Alzheimerâs., diabetes, kidney disease, cancer, aging, fertility, pregnancy and prenatal development. In the book she recommended 120 mcg of vitamin K2 per day, but she later raised it to 200 mcg per day, and she tripled her dosage when she was pregnant.