At the International Kidney Stone Institute, our goal is nothing less than the cure.
If you form calcium-oxalate kidney stones, it is important to limit your intake of dietary oxalates. Many healthy foods contain oxalate; you should limit those with very high concentrations. Below is a list of food containing very high levels of oxalate. Small amounts of these foods periodically are less harmful than single large amounts or binges.
Keep in mind that cooking greens condenses the oxalate level per serving. In other words, a small spinach salad would contain much less oxalate than a small serving of cooked spinach.