Vitamin K is a fat-soluble vitamin most well known for the important role it plays in blood clotting. However, many do not realize that there are different kinds of vitamin K, and they are completely different.

The health benefits of vitamin K2 go far beyond blood clotting, which is done by vitamin K1, and vitamin K2 also works synergistically with a number of other nutrients, including calcium and vitamin D.

Dr. Kate Rheaume-Bleue, a naturopathic physician with a keen interest in nutrition, has authored what I believe is one of the most comprehensive books on this important topic, titled: Vitamin K2 and the Calcium Paradox: How a Little Known Vitamin Could Save Your Life

http://articles.mercola.com/sites/articles/archive/2012/12/16/vitamin-k2.aspx?e_cid=20121216_SNL_Art_1