The only thing to say about these studies is . . .garbage in-garbage out. The first study blames high protein for magnesium and potassim deficiencies. The truth is that healthy kidneys are well able to handle 100 grams or more of protein. As far as meat being acidic, grains are even more so. Once again, this study isolates protein and ignores what the protein is combined with. High insulin due to insulin resistance caused by a lifetime of high carbing causes the kidneys to waste potassium and magnesium, which not only leads to high blood pressure but possibly to dangerous heart arhythmias as well. High insulin is the culprit; protein is innocent.

The second study is the classic epidemiological hoohah. You take mass of data, sift through it for one variable, and, lo and behold, that variable ends up causing whatever you say it's causing. Then they speculate about how that variable goes about doing its damage, for which there is no scientific basis, and the press reports that too much protein causes bone loss. What garbage! As Wbahn pointed out, we have no information about what else the women who reported high animal protein were eating. Given the complex metabolic interactions of different combinations of nutrients, these data are worthless. As Rosedale points out, hyperinsulinemia not only causes the body to waste magnesium and potassium, but also calcium. So if you want to find the culprit for osteoporosis, follow the carbs.