Uric acid stones of the kidneys require special dietary measures.
Uric stones occur in patients who have an increased uric acid in the blood and increased uric acid exertion in the urine. Since uric acid is an end product of purine metabolism, foods with a high purine content such as sweet bread, liver and kidney should be avoided.
On the other hand the urine should be kept alkaline if oxalate and uric acid stones are being formed. In this diet, fruits and vegetables should be liberally used and acid-forming foods should be kept to the minimum necessary for satisfactory nutrition. When the stones contain oxalate, foods with high oxalic acid content should be avoided. These foods include almonds, beetroots, brinjal, brown bread, cabbage, cherry, chocolate, French Beans, potatoes, radish, spinach and soyabeans.