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 .
Potassium citrate supplementation results in sustained improvement in calcium balance in older men and women.
The dietary acid load created by the typical Western diet may adversely impact the skeleton by disrupting calcium metabolism . Whether neutralizing dietary acid with alkaline potassium salts results in sustained improvements in calcium balance remains controversial . In this r and omized , double-blind , placebo-controlled study , 52 men and women ( mean age 65.2 ± 6.2 years ) were r and omly assigned to potassium citrate 60 mmol/d , 90 mmol/d , or placebo daily with measurements of bone turnover markers , net acid excretion , and calcium metabolism , including intestinal fractional calcium absorption and calcium balance , obtained at baseline and at 6 months . At 6 months , net acid excretion was significantly lower in both treatment groups compared to placebo and it was negative , meaning subjects ' dietary acid was completely neutralized ( -11.3 mmol/d on 60 mmol/d ; -29.5 mmol/d on 90 mmol/d , p < 0.001 compared to placebo ) . At 6 months , 24-hour urine calcium was significantly reduced in persons taking potassium citrate 60 mmol/d ( -46 ± 15.9 mg/d ) and 90 mmol/d ( -59 ± 31.6 mg/d ) compared with placebo ( p < 0.01 ) . Fractional calcium absorption was not changed by potassium citrate supplementation . Net calcium balance was significantly improved in participants taking potassium citrate 90 mmol/d compared to placebo ( 142 ± 80 mg/d on 90 mmol/d versus -80 ± 54 mg/d on placebo ; p = 0.02 ) . Calcium balance was also improved on potassium citrate 60 mmol/d , but this did not reach statistical significance ( p = 0.18 ) . Serum C-telopeptide decreased significantly in both potassium citrate groups compared to placebo ( -34.6 ± 39.1 ng/L on 90 mmol/d , p = 0.05 ; -71.6 ± 40.7 ng/L on 60 mmol/d , p = 0.02 ) whereas bone-specific alkaline phosphatase did not change . Intact parathyroid hormone was significantly decreased in the 90 mmol/d group ( p = 0.01 ) . Readily available , safe , and easily administered in an oral form , potassium citrate has the potential to improve skeletal health . Longer-term trials with definitive outcomes such as bone density and fracture are needed
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 .