About 80% of kidney stones are partially or entirely of the calcium oxalate type.
They form when urine is persistently saturated with calcium and oxalate.
Some of the oxalate in urine is produced by the body.
Calcium and oxalate in the diet play a part, but are not the only factors that affect the formation of calcium oxalate stones.
Dietary oxalate is an organic ion found in many vegetables, fruits, and nuts.
Calcium from bone may also play a role in kidney stone formation.
About 80% of kidney stones are partially or entirely of the calcium oxalate type. They form when urine is persistently saturated with calcium and oxalate. Some of the oxalate in urine is produced by the body. Calcium and oxalate in the diet play a part, but are not the only factors that affect the formation of calcium oxalate stones. Dietary oxalate is an organic ion found in many vegetables, fruits, and nuts. Calcium from bone may also play a role in kidney stone formation.
Calcium oxalate