I'm actually in the same predicament as you are. My DEXA scan came back showing that I have osteoporosis and my doctor recommended that I start taking medication for it which I refused. However, she never mentioned the possibility of having a calcium and/or magnesium deficiency may actually be the reason I have developed osteoporosis to begin with. I just recently went back and re-read my dexa scan notes. Funny, the technician recommended calcium supplements. Anyway, I did do some research and it appears as though our body is highly regulated in keeping these minerals available in the blood. It also appears as though the blood samples are not exactly accurate because in the case of malnutrition, etc., our system will extract calcium and magnesium from our bones to keep it in the blood supply, thereby depleting it from our bones. I am actually going to be visiting my physician in less than a week so I'm going to be approaching this subject with her at that time. What I can tell you is that I've already ordered these supplements because my symptoms and condition point in the direction of the bones being depleted. I don't want to wait until all of my teeth fall out for me to get the message if you know what I mean.