Too much salt can cause kidney stones. This is because excessive sodium increases the amount of calcium present in the urine. Consumption of excessive sodium is on the list of foods that can cause kidney stones. The total daily sodium intake should be less than 2,300 mg. People who have had kidney stones in the past should limit their intake to 1,500 mg. Fried food, processed food, and salad dressings are rich in sodium and are foods that cause kidney stones.