What causes kidney stones?

What causes kidney stones?

Kidney stones are formed from substances in your urine. The substances that combine into stones normally pass through your urinary system. When they don’t, it’s because there isn’t enough urine volume, causing the substances to become highly concentrated and to crystalize. This is typically a result of not drinking enough water. The stone-forming substances are:

• Calcium.
• Oxalate.
• Uric acid.
• Phosphate.
• Cystine (rare).
• Xanthine (rare).

These and other chemicals are some of the waste products that exit your body.