Calcium supplementation has been touted as a necessary step to promote bone health and help reduce osteoporosis in women. Recent studies have found that calcium supplementation alone will not guarantee that the mineral will reach the areas in the body where it is most needed. It requires an 'assistant' like a guide in a rainforest, chopping down build up and brush so that Calcium leaves behind in the arteries. This companion is vitamin K2. In the form of MK-7, Vitamin K2 helps to break down calcium that builds up in the blood vessels and helps to secure the mineral in the bones. The M refers to menaquinone a form of vitamin K derived from Natto. Natto is made from fermented soybeans.Cells called osteoblasts produce osteocalcin, the protein which helps secure calcium to the bones. Vitamin K converts osteocalcin into a form where it can do its job properly.
Vitamin K2 helps usher it into the proper place in the bones. Osteocalcin is the fastener.
Part of the challenges with incorporating Vitamin K2 into a diet is knowing which form is best. There are other Vitamin K2 derivatives including MK-4 which also helps fight against osteoporosis and reduces the amount of calcium in blood vessels, but it is derived from animals as well as tobacco. Often the form sold in supplements is synthetic and not directly from grass fed animals. So for those who want a form closest to the natural source, MK- 7 may be the preferred choice. As with any supplement, before it is taken, it is wise to consider other medications that are being taken and current diet (The Healthy Home Economist- July 2012).