Oh I forgot, study after study has shown both the Masai and the Samburu, who eat no plant foods do not suffer from osteoporosis. Calcium leeching from all meat diets is nonsense. It's ridiculous to say that Cordain has 'done his homework'. What he has done is formulate a simplistic hypothesis and then proceed to conveniently ignore all the contrary evidence. Which you seem to be doing also David.
Btw. Weston Price actually thinks the Dinkas were healthier than the Samburu or the Masai for eating a lot of grain. But grains are also 'acid forming'.