草酸钙是泌尿系统结石中最主要的成份,国外资料草酸钙为主的结石约占肾结石的2/3。由于尿中草酸钙常处于过饱和状态,因此当食物中摄入量增加时对尿中即可有草酸钙晶体析出以至形成结石的危险。菠菜含大量草酸盐,并发现菠菜可致高草酸尿。因此 Calcium oxalate is the most important component in the urinary system stones. The calcium oxalate-based stones in foreign countries account for about two-thirds of kidney stones. Since urinary calcium oxalate is often in a state of supersaturation, there is a risk that crystals of calcium oxalate will precipitate in the urine when urinary calcium oxalate increases, and stones will form. Spinach contains large amounts of oxalate and it is found that spinach can cause high oxalic aciduria. therefore