… Results: In fully adjusted analyses, lower dietary calcium, potassium, caffeine, phytate, and fluid
intake were all associated with a higher odds of an incident symptomatic kidney stone. Among
incident stone formers, 73 experienced symptomatic recurrence during a median 4.1 years of followup.
Adjusting for body mass index, fluid intake, and energy intake, lower dietary calcium and lower
potassium intake were predictive of symptomatic kidney stone recurrence. With further adjustment
for nondietary risk factors, lower dietary calcium intake remained a predictor of recurrence, but lower
potassium intake only remained a predictor of recurrence among those not taking thiazide diuretics or
calcium supplements.
Conclusion: Enriching diets in stone formers with foods high in calcium and potassium may help
prevent recurrent symptomatic kidney stones.
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