Vitamin K is a fat-soluble vitamin that is well-known for its role in blood clotting. However, there are two different kinds of vitamin K, each providing its own set of health benefits. Vitamin K1 is primarily responsible for blood clotting. Vitamin K2 works with calcium, magnesium and vitamin D providing various health benefits.
The 2010 European Prospective Investigation into Cancer and Nutrition (EPIC) study found that high intake of vitamin K2 — not K1 — leads to reduced cancer risk,