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 .
Urinary Calcium Loss in Elderly Menon a Vegetable:Animal (1:1)High-Protein Diet
Background : A high purified protein intake has been shown to induce urinary calcium loss . However , these findings could not be reproduced with a high-protein meat diet . Also , most studies have been carried out in young subjects and the applicability of their results to the elderly population on a mixed vegetable : animal diet  remains unclear . Objectives : To study whether a mixed vegetable : animal high-protein intake increases urinary calcium loss in elderly volunteers , as has been shown for younger subjects on a purified high-protein intake . Methods : Eight male volunteers , with ages ranging from 66 to 88 years , recruited from the University Hospital Geriatric Medicine Out patients Clinic , were studied . 24-hour urinary calcium , phosphorus , and creatinine were measured during a period of usual protein intake ( approximately 0.6 g/kg/day ) and during 7 days of vegetable : animal ( 1:1 ) high-protein intake ( 2 g/kg/day ) . Calcium and phosphorus intake were adjusted to be kept constant ( 1 g/day of each ) during the whole study . Results : Mean calcium urinary levels did not change significantly during the study ( 1.89 and 1.83 mmol/24 h during the usual and high-protein diet , respectively ) . Urinary phosphorus and creatinine levels also remained stable throughout the entire study . Conclusions : This study has not detected any increased calcium urinary excretion in male elderly volunteers su bmi tted to the mixed vegetable : animal high-protein diet . Therefore , it does not support the suggestion that a high-protein intake is a risk factor for urinary calcium loss in elderly men
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 .