The quantities involved are so small that they might as well not have bothered. In Asia, people have consumed +10mg of K2 for extended periods of time. 720 µg MK-7 plus 25 µg vitamin D or matching placebo for 24 months are laughably small. So small one can only wonder if they were trying the homeopathy where they keep diluting some concoction and claim it still has some effect.

Not even getting into the issue of whether D supplements are an adequate replacement from sunlight.

So, yeah, no conclusion...