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 .
A 1-y walking program and increased dietary calcium in postmenopausal women: effects on bone.
The effects of a supervised 1-y walking program and increased dietary calcium ( milk supplement , 831 mg/d , vs placebo drink , 41 mg/d ) on bones were examined in 36 postmenopausal women ( 60.2 + /- 6.5 y ) .  Trabecular bone-mineral density ( BMD ) of the lumbar spine ( L1-L3 ) , measured by computed tomography , increased by 0.5 % in exercising women ( n = 18 ) and decreased by 7.0 % in sedentary women ( n = 18 ; P = 0.02 ) . Femoral-neck BMD measured by dual-photon absorptiometry ( DPA ) increased by 2.0 % in women consuming high dietary calcium ( n = 18 ) and decreased by 1.1 % in those on moderate calcium intake ( n = 18 ; P = 0.001 ) . Neither exercise nor  dietary calcium  had an effect on lumbar spine ( L2-L4 ) measured by DPA , distal radius measured by single-photon absorptiometry , or total body calcium measured by in vivo neutron activation . The varying proportions and rates of turnover of trabecular and cortical bone from one site to another suggest that exercise and high dietary calcium may preferentially alter bone density at different skeletal sites
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 .