In older people with osteoporosis , higher protein intake ( ≥ 0.8-g/kg body weight/day , i.e. , above the current RDA ) is associated with higher BMD , a slower rate of bone loss , and reduced risk of hip fracture , provided that dietary calcium intakes are adequate .
Intervention with dietary protein supplements attenuate age-related BMD decrease and reduce bone turnover marker levels , together with an increase in IGF-I and a decrease in PTH .
There is no evidence that diet-derived acid load is deleterious for bone health .
Thus , insufficient dietary protein intakes may be a more severe problem than protein excess in the elderly .
A summary of systematic review s and meta-analyses addressing the benefits and risks of dietary protein intakes  for  bone health in adults suggests that dietary protein levels even above the current RDA may be beneficial in reducing bone loss and hip fracture risk , provided calcium intakes are adequate .
Several systematic review s and meta-analyses have addressed the benefits and risks of dietary protein intakes for bone health in adults .
Adequate supplies of dietary protein are required for optimal bone growth and maintenance of healthy bone .
Variation in protein intakes within the “ normal ” range accounts for 2–4 % of BMD variance in adults .
A follow-up study on the effects of a milk supplement on bone mineral density of postmenopausal Chinese women in Malaysia.
BACKGROUND A previous study on a r and omized controlled trial in 173 postmenopausal Chinese women in Kuala Lumpur showed that milk supplementation was effective to reduce bone loss at the total body , lumbar spine , femoral neck and total hip compared to the control group on a usual diet ( Chee et al. 2003 ) . OBJECTIVE The objective was to determine whether the results were sustained after the conclusion of the study . DESIGN A follow-up study , 18 months after a r and omized controlled trial of milk supplementation was concluded . A total of 139 participants were followed up 21 months after the study ended . Bone mineral density ( BMD ) was measured at the total body , lumbar spine , femoral neck and total hip by dual energy X-ray absorptiometry , and anthropometric measurements as well as changes in dietary habits were measured . RESULTS At the follow-up , the milk supplement group did not show significant bone loss from baseline at most sites ( mean differences + /- SE ) ( total body 0.42 + /- 0.25 % , femoral neck 0.44 + /- 0.58 % , total hip -0.06 + /- 0.46 % ) , unlike the control group ( total body -1.07 + /- 0.28 % p < 0.005 , femoral neck -1.49 + /- 0.56 % p < 0.05 , total hip -0.89 + /- 0.57 % p < 0.05 ) . However , both the milk and control groups showed bone loss from baseline at the lumbar spine ( milk -2.01 % , control -3.29 % , p superior 0.05 ) . The calcium intake of the milk group remained significantly higher than the control group ( milk 710 mg/day , control 466 mg/day , p < 0.005 ) despite discontinuation of the milk supplement . CONCLUSIONS The results showed that some of the beneficial effects of a milk supplement were still evident at follow-up and it was possible to motivate subjects to adopt a positive change in dietary calcium intake after intervention
In older people with osteoporosis , higher protein intake ( ≥ 0.8-g/kg body weight/day , i.e. , above the current RDA ) is associated with higher BMD , a slower rate of bone loss , and reduced risk of hip fracture , provided that dietary calcium intakes are adequate .
Intervention with dietary protein supplements attenuate age-related BMD decrease and reduce bone turnover marker levels , together with an increase in IGF-I and a decrease in PTH .
There is no evidence that diet-derived acid load is deleterious for bone health .
Thus , insufficient dietary protein intakes may be a more severe problem than protein excess in the elderly .
A summary of systematic review s and meta-analyses addressing the benefits and risks of dietary protein intakes  for  bone health in adults suggests that dietary protein levels even above the current RDA may be beneficial in reducing bone loss and hip fracture risk , provided calcium intakes are adequate .
Several systematic review s and meta-analyses have addressed the benefits and risks of dietary protein intakes for bone health in adults .
Adequate supplies of dietary protein are required for optimal bone growth and maintenance of healthy bone .
Variation in protein intakes within the “ normal ” range accounts for 2–4 % of BMD variance in adults .