I would wonder about if they ever consumed any dairy products at all. As from my understanding, the calcium, in my opinion of fifteen years of natural herbal study, is much much more dangerous than cholesterol. David Wolfe talking about calcium, there is a seven part video on youtube, here is the link. This is video one of seven: https://www.youtube.com/watch?v=R9VEz2Px8QM .
One of the videos if I remember right, he mentions something about a big chunk of calcium pulled out of a major heart value during surgery, with a tweezers, which I watched years ago. Scary stuff.
Also additional link that might be talking about the calcium organisms, which he calls something to the effect of the stuff that grows on the bottom of sea ships, barnacles.