Calcium supplements  increased BMD by 0.7 - 1.8 % at all five skeletal sites at one , two , and over two and a half years , but the size of the increase in BMD at later time points was similar to the increase at one year .
Increasing calcium intake from dietary sources or by taking calcium supplements produces small non-progressive increases in BMD , which are unlikely to lead to a clinical ly significant reduction in risk of fracture
OBJECTIVE To determine whether increasing calcium intake from dietary sources affects  bone mineral density ( BMD ) and , if so , whether the effects are similar to those of calcium supplements .
Preventing postmenopausal bone loss with ossein-hydroxyapatite compounds. Results of a two-year, prospective trial.
OBJECTIVE To evaluate , in postmenopausal women who refuse hormone replacement therapy ( HRT ) , whether continuous administration of an osseinhydroxyapatite compound ( OHC ) reduces bone loss and protects from osteoporosis . STUDY DESIGN Sixty postmenopausal women were included in an open study and were allocated to three groups . The first group ( n = 19 ) received treatment consisting in 3.32 g/d of OHC per day , the second group ( n = 21 ) received 2.5 g of calcium carbonate per day , and the third group ( n = 20 ) was a treatment-free control group .  Bone mineral density ( BMD ) , assessed by dual x-ray absorptiometry , was measured prior to and at 12 and 24 months of treatment . RESULTS Subjects on OHC therapy did not show significant changes related to baseline on bone mass across the study , whereas a significant decrease was detected in the calcium carbonate group during the second year ( -3.7 % , P < .05 ) and in the control group at the first and second BMD measurement ( -3.5 % , P < .05 ; -5.6 % , P < .01 ) . CONCLUSION Continuous administration of OHC prevents bone loss  in postmenopausal women , suggesting that this drug may be useful in the management of postmenopausal bone loss
Calcium supplements  increased BMD by 0.7 - 1.8 % at all five skeletal sites at one , two , and over two and a half years , but the size of the increase in BMD at later time points was similar to the increase at one year .
Increasing calcium intake from dietary sources or by taking calcium supplements produces small non-progressive increases in BMD , which are unlikely to lead to a clinical ly significant reduction in risk of fracture
OBJECTIVE To determine whether increasing calcium intake from dietary sources affects  bone mineral density ( BMD ) and , if so , whether the effects are similar to those of calcium supplements .