Author: Annabel Chang, M.D.
Kidney stones are very common—about 1 in 10 adults will get them at some point, and both men and women are affected. What are kidney stones? They are collections of things such as calcium or other substances that can become crystals and get stuck in your kidneys. Most of the time they are made up of calcium, but they can also be made up of other things, such as struvite, uric acid, and cystine.