Kidney stones are hard deposits made from minerals such as calcium or waste products such as uric acid. They start small in your kidneys but can grow bigger as more minerals stick to them. Kidney ...

You get kidney stones when your pee has a high concentration of minerals and other substances--like calcium, oxalate, and uric acid--that come together to make crystals. The crystals then stick ...

The most common type of stone contains calcium (KAL-see-um). Calcium is a normal part of a healthy diet. Calcium that is not used by the bones and muscles goes to the kidneys. In most people, the ...

Approximately 10% of US adults have had kidney stones. Within a five-year period, 50% of them reoccur. When urine becomes concentrated, crystals can form on the kidney lining developing into stones.

A team of researchers at UCLA has reported an unexpected twist in a condition long treated as a crystal chemistry problem. In samples of the most common kidney stone, they found bacteria living inside ...