Solgar Vitamin K2: Vitamin K2 plays an important role in cardiovascular and bone health. Vitamin K plays an important role in the synthesis of a group of proteins called Gla-proteins. Gla stands for gamma-carboxy glutamate and these proteins are important in the utilization of calcium.
Vitamin K actually refers to a group of vitamins with similar structures. These are vitamin K1 (known as phylloquinone or phytonadione) and Vitamin K2 (known as menaquinone, or MK). Vitamin K1 is synthesized by plants, vegetables and algae and has a low bioavailability. Vitamin K2 can be found in fermented foods, particularly cheese ad natto (Japanese fermented soybeans). Vitamin K2 is subdivided into short chain menaquinones (i.e. MK-7 to MK-9).
Vitamin K is therefore important in relation to blood clotting and bone health, and more recently has been identified as playing a crucial role in arterial health. Here, the deposition of calcium in the blood vessel walls is prevented by the action of matrix Gla protein, which is activated by Vitamin K2.