Is Salt Restriction Necessary to Reduce the Risk of Stone Formation?
Several studies have demonstrated a close association between idiopathic hypercalciuria and upper urinary tract stone disease. The cause of the hypercalciuria is not totally understood, but it is well known that the tubular reabsorption of sodium and calcium are closely related1. Studies in animals and man suggest that dietary and urinary sodium may influence urinary calcium excretion2,3. Except for a few isolated reports, however, there is little information on the role of dietary sodium in idiopathic hypercalciuria. We have examined the relationship between urinary sodium and calcium in a group of stone formers and investigated the effect of dietary sodium restriction in those who were hypercalciuric.
KeywordsUrinary Calcium Calcium Oxalate Calcium Excretion Urinary Sodium Dietary Sodium
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