Kidney stones are small, hard deposits formed of substances in your urine. Kidney stones often develop in the urine due to a lack of liquid to help flush certain substances out of your body such as calcium, urate, oxalate, cystine, and phosphate. Kidney stones range in size. Very small stones under ¼” should be able to painlessly pass through the urinary tract. Larger stones, however, may get ... Read More ->