What is the role of calcium supplementation in the etiology of hypercalciuria?

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

A study suggests that calcium supplementation, with or without calcitriol, does not increase the risk of calcium urolithiasis significantly in healthy (non–stone-forming) postmenopausal women even if they have increased urinary calcium excretion. [24] The study, which involved healthy postmenopausal women (not calcium-stone formers), showed that those women who were administered calcium supplements alone did not demonstrate any significant increase in their urinary calcium excretion.

Those who were administered calcium and calcitriol did have a significant increase in their urinary calcium levels. However, this did not result in any increase in overall stone risk or calcium oxalate activity product, due in part to a simultaneous decrease of about 20% in urinary oxalate levels. Theoretically, a thiazide diuretic would reduce the urinary excretion of calcium and could be of some therapeutic benefit for this group at risk for osteoporosis.


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