Soy Substitution Not a Problem for Calcium Retention
A study in which postmenopausal women substituted 25g of soy protein for meat showed no alteration in the women's calcium retention or indicators of bone and cardiovascular health.
"In a controlled feeding study, the effects of substituting 25g soy protein for meat on calcium retention and bone biomarkers were determined. Postmenopausal women (n=13) ate two diets that were similar, except that, in one diet, 25g high-isoflavone soy protein was substituted for an equivalent amount of meat protein (control diet), for seven weeks each in a randomized crossover design.