Calcium oxalate crystals in the urine are the most common cause of kidney stones. Learn where they come from, how to prevent them, and how to remove them.

Calcium oxalate crystals can precipitate and cause obstruction in the tubular lumen. Deposition of calcium oxalate can also induce an inflammatory response, which can lead to kidney damage.

A high concentration of solutes like calcium or oxalate in the urine is what usually first causes these crystals to form and clump together. High concentration of calcium is known as ...

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The intake of foods high in oxalate should be limited. Although there are many such foods, some more frequently than others have been shown to be most at fault for raising urine oxalate levels ...

Calcium oxalate renal calculi constitute the principal form of calcium-containing kidney stones in patients who are free of urinary-tract obstruction or infection. 5 A familial predilection to ...

While they are not inherently harmful, oxalates can combine with calcium in the urine, leading to the formation of calcium oxalate stones — the most common type of kidney stone.

When that happens, the calcium and oxalate form crystals. At the same time, the urine may lack substances that prevent the crystals from sticking together, creating an ideal environment for kidney ...