I've read that magnesium may help prevent and treat liver calcification. The idea behind this claim is that magnesium helps calcium dissolve and get used by the body.
Although it sounds like a great and simple idea, I don't think there is any truth to it. I don't think that liver calcification occurs because there is too much calcium in the body and not enough magnesium. There are other causes. So I don't think anyone should try to treat themselves with magnesium. Excessive magnesium can have negative side effects, it's possible to take too much.