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Under normal circumstances, the urine contains substances that prevent crystallization but for patients with this condition, these inhibitory substances are ineffective. At least 1% of people will pass a kidney stone during their lifetime, producing some of the most severe pain possible. Kidney stones may contain various forms of salts - the most common is calcium in combination with either phosphate or oxalate. These salts are an essential part of our daily dietary intake and requirement. Other types of stones are the struvite stone (caused by infection), uric acid stone and cystine stone.
Causes & Development The reasons why some people develop kidney stones are not fully understood. Aside from more obvious risk factors, metabolic conditions e.g. hyperparathyroidism, cystinuria (inherited disease), and hyperoxaluria (inherited disease) are also common causes of stone formation. |
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