Foods Containing Calcium Oxalate

Calcium oxalate can contribute to the formation of kidney stones. This chemical compound forms when calcium and oxalate combine—no food contains this compound naturally. Cutting back on foods rich in oxalates can reduce the formation of this compound and consequently lower the risk of getting kidney stones. Not everyone who suffers from kidney stones should also reduce calcium consumption, however, since this will only benefit certain individuals who have conditions that contribute to excess calcium in the blood and urine.

Calcium-Rich Foods

• Foods high in calcium include all dairy products and green, leafy vegetables. Other sources include Brazil nuts, almonds, sesame seeds, flax seeds, broccoli and kelp.

Oxalate-Rich Foods

• Oxalate-rich foods include rhubarb, spinach, strawberries, chocolate, nuts, beets, wheat bran, blackberries, blueberries, wheat germ, whole wheat products, tangerines, beet greens, dandelion greens, olives, leeks, kale, concord grapes, figs, carrots, celery, soy sauce, marmalade, grits and pretzels.

Oxalate-Rich Beverages

• Drinks high in oxalate include beer, black tea, chocolate milk, hot chocolate, instant coffee and soy milk.