Nutrition Research
Volume 23, Issue 12 , Pages 1651-1660, December 2003

Dietary calcium intake among patients with urinary calculi

  • Alessandra C Pizzato

      Affiliations

    • Post Graduate Program in Medical Sciences: Nephrology, School of Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil Rua Ramiro Barcelos, 2350 Sala 2030 Porto Alegre, RS, Brazil 50035-153
    • Corresponding Author InformationCorresponding author: Tel: +55-51-9227-5794; fax: +55-51-3316-8001.
    • ,
  • Elvino J.G Barros

      Affiliations

    • Post Graduate Program in Medical Sciences: Nephrology, School of Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil Rua Ramiro Barcelos, 2350 Sala 2030 Porto Alegre, RS, Brazil 50035-153

Received 12 March 2003; received in revised form 5 September 2003; accepted 6 September 2003.

Abstract 

Diet plays an important role in the formation and growth of kidney stones, and calcium intake below recommended dietary allowances may expose patients to a higher risk of recurrence. This study evaluated calcium intake and the dietary profile of 37 outpatients with renal lithiasis and 45 control subjects were age and sex matched. Dietary calcium, assessed by four-day dietary records, was significantly lower for patients with urinary calculi. When records for weekdays and Sunday were analyzed separately, a significantly lower calcium intake was again observed for patients with lithiasis both on weekdays and on Sundays. Adjustments to body mass index (BMI), income, age, and sex revealed a lower calcium intake for patients with lithiasis in all dietary records (P < 0.02), which may be explained by the fact that physicians and nutritionists still recommend these patients reduce calcium intake. As this may be one more risk factor for recurrence, recommendations made by health professionals should be reviewed.

Keywords:  Lithiasis, Urinary calculi, Nutrition, Calcium intake, Protein intake, Oxalate

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PII: S0271-5317(03)00204-5

doi:10.1016/j.nutres.2003.09.001

Nutrition Research
Volume 23, Issue 12 , Pages 1651-1660, December 2003

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