Dietary habits in women with recurrent idiopathic calcium nephrolithiasisReport as inadecuate

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Journal of Translational Medicine

, 10:63

Nutrition and metabolism


BackgroundNutrition has been widely recognized to influence the risk of kidney stone formation. Therefore the aim of our study was to assess: a whether usual diet of women with idiopathic calcium nephrolithiasis ICN living in Parma Northern-Italy is different compared to healthy controls, b how their diet differs from Italian National guidelines and c whether it is related to nephrolithiasis clinical course.

Methods143 women with recurrent ICN mean age 43 ± 13 ys and 170 healthy women mean age 42 ± 11 ys were enrolled. All women completed a food frequency questionnaire for the last 60-days and a 3-day dietary diary analysed with a dedicated software.

ResultsStone formers showed a higher consumption of sausages, ham, meat and sweets than healthy controls 43.1% vs 11.1%, 29.4% vs 13.9%, 21.6% vs 4.2%, 66.7% vs 18.1%, p < 0.001. The 3-day diary analysis showed an intake of calories, carbohydrates, lipids and non-discretionary sodium about 10% higher than healthy controls p < 0.001. Finally, after dividing the population into 3 age groups ≤30, 31-40, > 40 years, the differences described above were amplified in the class ≤30 years, where nephrolithiasis presented a more serious course shorter recurrence interval, greater stone-rate. In this age group the intake of fruit and vegetables was notably lower than guideline recommendations.

ConclusionsWe conclude that the usual diet of women with recurrent ICN is different from controls and characterized by low intake of fruits and vegetables and higher consumption of simple sugars and foods with high protein and salt content. This dietary imbalance could play a role in the ICN pathogenesis, especially in younger women.

This work was financed by grants from Italian Ministry of University and Research as part of a larger project about the prevention of kidney stones PRIN 2005063822 and by Fondazione per la Ricerca Scientifica Termale FoRST. No potential conflict of interest relevant to this paper was reported.

KeywordsIdiopathic calcium nephrolithiasis Diet Kidney stones Food frequency Electronic supplementary materialThe online version of this article doi:10.1186-1479-5876-10-63 contains supplementary material, which is available to authorized users.

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Author: Tiziana Meschi - Antonio Nouvenne - Andrea Ticinesi - Beatrice Prati - Angela Guerra - Franca Allegri - Federica Pigna - La


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