Urine calcium excretion rates were consistent with osteoporosis development ; however calcium balance studies did not demonstrate loss of whole body calcium with higher net acid excretion .
No study revealed a biologic mechanism functioning at physiological pH. Finally , r and omized studies did not provide evidence for an adverse role of phosphate , milk , and grain foods in osteoporosis .
Conclusions A causal association between dietary acid load and osteoporotic bone disease is not supported by evidence and there is no evidence that an alkaline diet is protective of bone health
Background Modern diets have been suggested to increase systemic acid load and net acid excretion .
In response , alkaline diets and products are marketed to avoid or counteract this acid , help the body regulate its pH to prevent and cure disease .
The objective of this systematic review was to evaluate causal relationships between dietary acid load and osteoporosis using Hill 's criteria .
Whole-body vibration can reduce calciuria induced by high protein intakes and may counteract bone resorption: A preliminary study
Abstract Excess protein intake can adversely affect the bone via an increase in calcium excretion , while suitable mechanical loading promotes osteogenesis . We therefore investigated whether vibration exposure could alleviate the bone mineral losses associated with a metabolic acidosis . Ten healthy individuals aged 22 – 29 years ( median = 25 ) underwent three 5-day study periods while monitoring their dietary intake . The study consisted of recording the participants ' usual dietary intake for 5 consecutive days . Participants were then r and omly divided into two groups , one of which received a protein supplement ( 2 g · kg−1 body mass · day−1 ; n = 5 ) and the other whole-body low-magnitude ( 3.5 g ) , low-frequency ( 30 Hz ) mechanical vibration ( WBV ) delivered through a specially design ed vibrating plate for 10 min each day ( n = 5 ) . Finally , for the third treatment period , all participants consumed the protein supplement added to their normal diet and were exposed to WBV exercise for 10 min per day . Daily urine sample s were collected throughout the experimental periods to determine the excretion of calcium , phosphate , titratable acid , urea , and C-telopeptide . As expected , when the participants underwent the high protein intake , there was an increase in urinary excretion rates of calcium ( P < 0.001 ) , phosphate ( P < 0.003 ) , urea ( P < 0.001 ) , titratable acid ( P < 0.001 ) , and C-telopeptide ( P < 0.05 ) compared with baseline values . However , high protein intake coupled with vibration stimulation result ed in a significant reduction in urinary calcium ( P = 0.006 ) , phosphate excretion ( P = 0.021 ) , and C-telopeptide ( P < 0.05 ) compared with protein intake alone , but did not affect titratable acid and urea output . The participants showed no effect of WBV exercise alone on urinary excretion of calcium , phosphate , urea , titratable acid , or C-telopeptide . The results indicate that vibration stimulation can moderate the increase in bone resorption and reduction in bone formation caused by a metabolic acidosis
Urine calcium excretion rates were consistent with osteoporosis development ; however calcium balance studies did not demonstrate loss of whole body calcium with higher net acid excretion .
No study revealed a biologic mechanism functioning at physiological pH. Finally , r and omized studies did not provide evidence for an adverse role of phosphate , milk , and grain foods in osteoporosis .
Conclusions A causal association between dietary acid load and osteoporotic bone disease is not supported by evidence and there is no evidence that an alkaline diet is protective of bone health
Background Modern diets have been suggested to increase systemic acid load and net acid excretion .
In response , alkaline diets and products are marketed to avoid or counteract this acid , help the body regulate its pH to prevent and cure disease .
The objective of this systematic review was to evaluate causal relationships between dietary acid load and osteoporosis using Hill 's criteria .