What are the potassium intake recommendations for the treatment of hypercalciuria?

Updated: Apr 23, 2019
  • Author: Stephen W Leslie, MD, FACS; Chief Editor: Vecihi Batuman, MD, FASN  more...
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Answer

Some evidence suggests that low potassium intake may be a risk factor for stones, but this has not been confirmed in all studies. [41, 42, 43] The potential influence of a low-potassium diet may be due to its relationship to sodium intake in stone formers, who generally have a higher sodium/potassium ratio than do non–stone formers.

Potassium decreases urinary calcium excretion by inducing transient sodium diuresis, which results in a temporary contraction of the extracellular fluid volume and an increase in renal tubular calcium reabsorption. Potassium also increases renal phosphate absorption, raising serum phosphate levels, which reduces serum vitamin D-3, resulting in decreased intestinal calcium absorption.


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