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

Updated: Jun 02, 2021
  • 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. [36, 37, 38] 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 D3, resulting in decreased intestinal calcium absorption.


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