Increased Dietary Calcium Intake Reduces Urinary Oxalate Excretion in Healthy Adults

Urolithiasis ◽  
1989 ◽  
pp. 435-438 ◽  
Author(s):  
J. Lemann ◽  
J. A. Pleuss ◽  
R. W. Gray
Keyword(s):  
Calcium Intake ◽  
Dietary Calcium ◽  
Healthy Adults ◽  
Dietary Calcium Intake ◽  
Urinary Oxalate ◽  
Oxalate Excretion ◽  
Urinary Oxalate Excretion

scholarly journals Urinary oxalate excretion increases with body size and decreases with increasing dietary calcium intake among healthy adults

1996 ◽  
Vol 49 (1) ◽  
pp. 200-208 ◽  
Author(s):  
Jacob Lemann ◽  
Joan A. Pleuss ◽  
Elaine M. Worcester ◽  
Laurel Hornick ◽  
Debra Schrab ◽  
...  
Keyword(s):  
Body Size ◽  
Calcium Intake ◽  
Dietary Calcium ◽  
Healthy Adults ◽  
Dietary Calcium Intake ◽  
Urinary Oxalate ◽  
Oxalate Excretion ◽  
Urinary Oxalate Excretion

Urinary Oxalate Excretion Increases With Body Size and Decreases With Increasing Dietary Calcium Intake Among Health Adults

1998 ◽  
Vol 159 (2S) ◽  
pp. 615-616
Author(s):  
J. Lemann ◽  
J.A. Pleuss ◽  
E.M. Worcester ◽  
L. Hornick ◽  
D. Schrab ◽  
...  
Keyword(s):  
Body Size ◽  
Calcium Intake ◽  
Dietary Calcium ◽  
Dietary Calcium Intake ◽  
Urinary Oxalate ◽  
Oxalate Excretion ◽  
Urinary Oxalate Excretion

scholarly journals Effect of calcium intake on urinary oxalate excretion in calcium stone-forming patients

2002 ◽  
Vol 35 (6) ◽  
pp. 669-675 ◽  
Author(s):  
J.L. Nishiura ◽  
L.A. Martini ◽  
C.O.G. Mendonça ◽  
N. Schor ◽  
I.P. Heilberg
Keyword(s):  
Calcium Intake ◽  
Urinary Oxalate ◽  
Calcium Stone ◽  
Oxalate Excretion ◽  
Urinary Oxalate Excretion

scholarly journals Impact of Dietary Calcium and Oxalate, and Oxalobacter Formigenes Colonization on Urinary Oxalate Excretion

2011 ◽  
Vol 186 (1) ◽  
pp. 135-139 ◽  
Author(s):  
Juquan Jiang ◽  
John Knight ◽  
Linda H. Easter ◽  
Rebecca Neiberg ◽  
Ross P. Holmes ◽  
...  
Keyword(s):  
Dietary Calcium ◽  
Urinary Oxalate ◽  
Oxalobacter Formigenes ◽  
Oxalate Excretion ◽  
Urinary Oxalate Excretion

scholarly journals The Variability and Dietary Dependence of Urinary Oxalate Excretion in Recurrent Calcium Stone Formers

1987 ◽  
Vol 24 (4) ◽  
pp. 385-390 ◽  
Author(s):  
J M Brown ◽  
G Stratmann ◽  
D M Cowley ◽  
B M Mottram ◽  
A H Chalmers
Keyword(s):  
Calcium Intake ◽  
Normal Subjects ◽  
Urinary Calcium ◽  
Stone Disease ◽  
Calcium Excretion ◽  
Urinary Oxalate ◽  
Calcium Stone ◽  
Oxalate Excretion ◽  
Stone Formers ◽  
Urinary Oxalate Excretion

Twenty-two recurrent calcium stone formers had 24-h urinary oxalate excretions on their home diets which were significantly greater than those of 30 normal subjects (0·48±0·23 mmol/d; mean±SD compared with 0·31±0·11; P<0·01). The stone formers also demonstrated marked day to day variability in oxalate excretion indicating that a single normal urinary oxalate measurement did not exclude significant hyperoxaluria at other times. On a hospital diet containing 1000 mg calcium per day, urinary oxalate excretion fell significantly from 0·48±0·23 mmol/d to 0·32±0·12; P<0·01. As the urinary calcium excretion in and out of hospital was similar, it seems unlikely that low calcium intake at home was responsible for the hyperoxaluria. All patients had recurrent symptomatic stone disease and had been advised to avoid foods rich in oxalate. Whilst poor compliance is a possible explanation for the variability in oxalate excretion, we believe it is more likely that there is an inadvertent intake of oxalogenic precursors in their diet. As normal subjects do not demonstrate hyperoxaluria on similar home diets, stone formers may have a metabolic defect in the handling of these precursors.

Higher Dietary Acidity is Associated with Lower Bone Mineral Density in Postmenopausal Iranian Women, Independent of Dietary Calcium Intake

2014 ◽  
Vol 84 (3-4) ◽  
pp. 0206-0217 ◽  
Author(s):  
Seyedeh-Elaheh Shariati-Bafghi ◽  
Elaheh Nosrat-Mirshekarlou ◽  
Mohsen Karamati ◽  
Bahram Rashidkhani
Keyword(s):  
Calcium Intake ◽  
Dietary Calcium ◽  
Dietary Calcium Intake ◽  
Dietary Intakes ◽  
Iranian Women ◽  
Acid Base Balance ◽  
Mineral Density ◽  
Acid Base ◽  
Base Balance ◽  
Dietary Acid

Findings of studies on the link between dietary acid-base balance and bone mass are relatively mixed. We examined the association between dietary acid-base balance and bone mineral density (BMD) in a sample of Iranian women, hypothesizing that a higher dietary acidity would be inversely associated with BMD, even when dietary calcium intake is adequate. In this cross-sectional study, lumbar spine and femoral neck BMDs of 151 postmenopausal women aged 50 - 85 years were measured using dual-energy x-ray absorptiometry. Dietary intakes were assessed using a validated food frequency questionnaire. Renal net acid excretion (RNAE), an estimate of acid-base balance, was then calculated indirectly from the diet using the formulae of Remer (based on dietary intakes of protein, phosphorus, potassium, and magnesium; RNAERemer) and Frassetto (based on dietary intakes of protein and potassium; RNAEFrassetto), and was energy adjusted by the residual method. After adjusting for potential confounders, multivariable adjusted means of the lumbar spine BMD of women in the highest tertiles of RNAERemer and RNAEFrassetto were significantly lower than those in the lowest tertiles (for RNAERemer: mean difference -0.084 g/cm2; P=0.007 and for RNAEFrassetto: mean difference - 0.088 g/cm2; P=0.004). Similar results were observed in a subgroup analysis of subjects with dietary calcium intake of >800 mg/day. In conclusion, a higher RNAE (i. e. more dietary acidity), which is associated with greater intake of acid-generating foods and lower intake of alkali-generating foods, may be involved in deteriorating the bone health of postmenopausal Iranian women, even in the context of adequate dietary calcium intake.

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