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 .
Protein intake and lumbar bone density: the Multi-Ethnic Study of Atherosclerosis (MESA).
Dietary protein has been shown to increase urinary Ca excretion in r and omised controlled trials , and diets high in protein may have detrimental effects on bone health ; however , studies examining the relationship between dietary protein and bone health have conflicting results . In the present study , we examined the relationship between dietary protein ( total , animal and vegetable protein ) and lumbar spine trabecular volumetric bone mineral density ( vBMD ) among participants enrolled in the Multi-Ethnic Study of Atherosclerosis ( n 1658 ) .  Protein intake was assessed using a FFQ obtained at baseline examination ( 2000 - 2 ) . Lumbar spine vBMD was measured using quantitative computed tomography ( 2002 - 5 ) , on average 3 years later . Multivariable linear and robust regression techniques were used to examine the associations between dietary protein and vBMD . Sex and race/ethnicity jointly modified the association of dietary protein with vBMD ( P for interaction = 0·03 ) . Among white women , higher vegetable protein intake was associated with higher vBMD ( P for trend = 0·03 ) , after adjustment for age , BMI , physical activity , alcohol consumption , current smoking , educational level , hormone therapy use , menopause and additional dietary factors . There were no consistently significant associations for total and animal protein intakes among white women or other sex and racial/ethnic groups . In conclusion , data from the present large , multi-ethnic , population -based study suggest that a higher level of protein intake , when substituted for fat , is not associated with poor bone health . Differences in the relationship between protein source and race/ethnicity of study population s may in part explain the inconsistent findings reported previously
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 .