FRIDAY, Aug. 12, 2022 (HealthDay News) — Lower dietary intake of calcium and potassium are risk factors for symptomatic recurrence of kidney stones, according to a study published in the August issue of Mayo Clinic Proceedings.
Api Chewcharat, MD, of the Mayo Clinic in Rochester, Minnesota, and colleagues evaluated whether dietary factors were predictive of symptomatic recurrence of kidney stones. The analysis included 411 local incident symptomatic kidney stone formers (validated medical record) and 384 controls seen at the Mayo Clinic between January 1, 2009 and August 31, 2018, who completed a questionnaire of food frequency.
The researchers found that lower dietary intakes of calcium, potassium, caffeine, phytate and fluids were associated with higher odds of an incident symptomatic kidney stone. During an average of 4.1 years of follow-up, 73 incident stone formers experienced symptomatic recurrence. Lower dietary calcium intake and lower potassium intake were predictive of symptomatic kidney stone recurrence when adjusting for body mass index, fluid intake, and energy intake. Lower dietary calcium intake remained a predictor of recurrence with further adjustment for non-dietary risk factors, but lower potassium intake remained a predictor of recurrence only among those not taking thiazide diuretics or supplements of calcium
“Enriching stone-forming diets with foods rich in calcium and potassium may help prevent recurrent symptomatic kidney stones,” the authors write.
Two authors disclosed financial ties to the pharmaceutical and biopharmaceutical industries.
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