Urolithiasis in Southern Rajasthan: Contribution of Dietary Oxalate to Urinary Oxalate

Abstract

The incidence of urinary stones is high in this Western part of India and has been increasing progressively during the last few years^1,2. Our studies have shown that hyperoxaluria is one of the most significant etiologic factors in the local population³. Singh et al⁴ have reported previously that oxalate intake is quite high in some sections of the local population. However, the contribution of dietary oxalate to urinary oxalate has not been studied. Various reports indicate that 2 to 12% of dietary oxalate can be absorbed and is excreted in the urine. Since the consumption of oxalate-rich vegetables, especially spinach, is very high in this area, we have undertaken the present study to define the effect of a dietary oxalate load on urinary oxalic acid in normal individuals and stone formers.