What's less known is that it can also bind calcium, making it unavailable for absorption. (womenshealthandfitness.com.au)
Vitamin K2 has also been shown to be an important factor in improving bone strength by binding calcium and other minerals to bone. (naturalhealth365.com)
(B) Averaged amount of bound calcium ions as calculated from the difference between the measured amount of free calcium ions and the dosed amount of calcium ions shown in (A) for five pH levels. (science.sciencemag.org)