Abstract
Summary
An investigation was conducted to determine the urinary oxalate excretion of normal males on their regular diet, and to determine to what extent extra-dietary ascorbic acid would increase this excretion. The mean 24 hour urinary oxalic acid excretion of 51 healthy adult males on their regular diets was 38.3 ± 1.7 mg. The 24 hour excretion of any individual was remarkably constant over a three week period. The daily ingestion of 4 or more g of ascorbic acid increased urinary excretion of oxalic acid; whereas the daily ingestion of less than 4 g of ascorbic acid produced no significant increase in oxalate excretion.
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