* Solid mass made up of tiny crystals.
* One or more stones can be in the kidney and other places all at once Causes, risks, and incidents
* Common, run in families, occur in premature babies
* The cause of the kidney stone depends on the type you have. * Stones form from specific substances over a period of time. Types of Kidney Stones
* Calcium Stones
* Most common
* Mainly in m
* Calcium stones are most common. They are more common in men between age 20 - 30. Calcium can combine with other substances, such as oxalate (the most common substance), phosphate, or carbonate, to form the stone. Oxalate is present in certain foods such as spinach. It's also found in vitamin C supplements. Diseases of the small intestine increase your risk of these stones. *
* Cystine stones can form in people who have cystinuria. This disorder runs in families and affects both men and women. *
* Struvite stones are mostly found in women who have a urinary tract infection. These stones can grow very large and can block the kidney, ureter, or bladder. *
* Uric acid stones are more common in men than in women. They can occur with gout or chemotherapy. *
* Other substances also can form stones, including the medications, acyclovir, indinavir, and triamterene. *
* The biggest risk factor for kidney stones is not drinking enough fluids. Kidney stones are more likely to occur if you make less than 1 liter of urine a day. That's slightly more than a quart.
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