What causes kidney stones?


Quick Answer

According to Mayo Clinic, there is no single cause of kidney stones; however, there are several factors that increase the risk of their development. These include a diet high in sodium, not drinking enough water and a family history of kidney stones.

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What causes kidney stones?
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Full Answer

According to Mayo Clinic, kidney stones form when one's urine contains large amounts of substances likely to form crystals in the kidneys. These substances are uric acid, calcium and oxalate. Too much sodium increases the amount of calcium one's kidneys must filter, raising the chance of stones forming. Also, not drinking enough water causes uric acid crystals to build up in the kidneys. Certain foods contain oxalate, such as nuts and chocolate. The kidneys also produce oxalate, and a excessive amount can lead to kidney stones.

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