There appears to be little benefit of increasing protein intake for bone health in healthy adults but there is also clearly no indication of any detrimental effect , at least within the protein intakes of the population s studied ( around 0.8–1.3 g/Kg/day ) .
We undertook a systematic review and meta- analysis of published papers assessing  dietary protein and bone health .
We found little benefit of increasing protein intake for  bone health in healthy adults but no indication of any detrimental effect , at least within the protein intakes of the population s studied .
This systematic review and meta- analysis analysed the relationship between dietary protein and bone health across the life-course .
Effects of soy protein isolate and moderate exercise on bone turnover and bone mineral density in postmenopausal women
Objective : The aim of this study was to assess the independent and additive effects of soy protein isolate ( SPI ) and moderate-intensity exercise ( EX ) on bone turnover and bone mineral density ( BMD ) . Design : This study used a placebo-controlled , double-blind ( soy ) , r and omized 2 ( SPI vs milk protein isolate [ MPI ] ) × 2 ( EX vs no EX ) design . Sixty-one postmenopausal women were r and omized , and 43 ( 62 ± 5 y ) completed the 9-month intervention ( SPI , n = 10 ; MPI , n = 12 ; SPI + EX , n = 11 ; MPI + EX , n = 10 ) . Serum C-terminal cross-linked telopeptides of type I collagen and serum bone-specific alkaline phosphatase were measured as markers of bone resorption and formation , respectively . BMD was measured by dual-energy x-ray absorptiometry . Results : At 9 months , SPI reduced serum C-terminal cross-linked telopeptides ( −13.3 % ± 15.3 % vs −1.5 % ± 21.0 % ; P = 0.02 ) and serum bone-specific alkaline phosphatase ( −4.7 % ± 14.7 % vs 6.5 % ± 17.7 % ; P = 0.02 ) compared to milk protein isolate . EX attenuated the reduction in serum C-terminal cross-linked telopeptides ( −1.9 % ± 21.6 % vs −12.4 % ± 15.3 % ; P = 0.04 ) ; however , no EX effects were apparent in serum bone-specific alkaline phosphatase at 9 months ( 2.8 % ± 16.1 % vs −1.0 % ± 18.3 % ; P = 0.28 ) . Neither SPI nor EX affected BMD at any site ; however , change in BMD was related to change in fat mass ( r = 0.40 , P < 0.05 ) . Conclusions : In postmenopausal women ( 1 ) SPI reduces bone turnover with no impact on BMD over 9 months ; ( 2 ) moderate-intensity endurance exercise training did not favorably alter bone turnover and had no impact on BMD ; and ( 3 ) there were no additive effects of soy and exercise on bone turnover or BMD
There appears to be little benefit of increasing protein intake for bone health in healthy adults but there is also clearly no indication of any detrimental effect , at least within the protein intakes of the population s studied ( around 0.8–1.3 g/Kg/day ) .
We undertook a systematic review and meta- analysis of published papers assessing  dietary protein and bone health .
We found little benefit of increasing protein intake for  bone health in healthy adults but no indication of any detrimental effect , at least within the protein intakes of the population s studied .
This systematic review and meta- analysis analysed the relationship between dietary protein and bone health across the life-course .