Health Capsule Kidney stones are a fairly common health issue, affecting roughly 11% of men and about 6% of women at some point in their lives. A sudden, intense pain in the lower back, abdomen, or groin can often be the first sign. Other symptoms to look out for include blood in the urine, discomfort during urination, or a frequent urge to urinate. These stones develop when there is a high concentration of specific minerals in the urine. Over time, these minerals can crystallize to form