Bone Effects of Calcium Restriction Diet in Children with Absorptive Hypercalciuria

A major risk factor for nephrolithiasis is hypercalciuria, present in 50–70 % of hypercalciuric children1. Hypercalcuria may occur as a results of either increased intestinal absorption of dietary calcium (absorptive hypercalciuria-AH)2 or decreased renal tubular resorption of filtered calcium (renal hypercalciuria-RH)3, 4. The treatment of AH is by reducing dietary calcium intake. However, low calcium intake is potentially associated with decreased bone mineral mass of growing children and its effects have not been prospectivelv studied in children with hypercalciuria.