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 .
Biological effects of drinking-water mineral composition on calcium balance and bone remodeling markers.
OBJECTIVE To compare the effects of 2 drinking waters containing similar calcium ( Ca ) concentration in order to analyze the role of ions other than Ca on bone metabolism . These mineral drinking-waters differed by their mineral composition primarily concerning the concentration of bicarbonate ( HCO3- ) , high in the HB , and sulfate , high in HS water . DESIGN Of 60 included women , 39 completed the study . Patients were r and omly assigned to an intake of 1 liter per day of mineral water HB or HS for 28 d , followed by cross-over to the alternative drinking-water for a further 28 d. At baseline and after each period of one month , Ca metabolism parameters , acid-base status , and bone remodeling markers were measured . RESULTS Changes in Ca metabolism were significant in the HB group where the ionized Ca increased and the PTH decreased . Serum pH showed a similar increase whatever the used drinking water compared to baseline . In the HB group , significant increase in urine pH , and significant decrease in AT-HCO3- and NH4 + were observed . Bone resorption markers , urinary CTx/Cr , Pyr/Cr , and D-Pyr/Cr , significantly decreased in the HB group compared to baseline , and were not significantly modified in the HS group . CONCLUSIONS These results showed a beneficial effect of the bicarbonaterich HB water on bone metabolism . This may account for a better bioavailability of the Ca , a greater alkalinization , and a larger decrease in PTH level secondary to a higher ionized Ca level . The higher content of silica in HB water may have also participated to the positive action on bone balance that was observed . In this short term study , these data underlined the potential role of the mineral drinking water composition on bone metabolism
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 .