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 .
Effect of estrogens and calcium carbonate on bone loss in postmenopausal women.
Sixty postmenopausal women were placed in three groups -- control , sex hormone-treated , and CaCO3-treated-- and followed for 2 years . Skeletal mass decreased by 1.18%/year in the control group , 0.15%/year in the hormone group , and 0.22%/year in the CaCO3 group by radiogrammetry ; and 2.88%/year in the control group , 0.73%/year in the hormone group , and 1.83%/year in the CaCO3 group by photon absorptiometry . The treatment groups differed significantly from the control group except for photon absorptiometry in the CaCO3 group . Bone accretion and resorption decreased in the treatment groups as measured by calcium tracer kinetics , resorption more so than accretion . We conclude that [ 1 ] these techniques are sufficiently sensitive to detect age-related bone loss ; [ 2 ] postmenopausal sex-hormone replacement measurably decreases age-related bone loss by suppressing bone turnover , resorption more than accretion ; and [ 3 ] calcium supplements produce the same effect but at the dose we used were slightly less effective
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 .