What causes kidney stones?
What causes kidney stones?
user
Kidney stones are caused by excess crystals of either calcium or phosphate, which build up in your kidneys.  These stones can get large enough to cause kidney damage.  The best way to prevent kidney stones is to drink plenty of fluids.  Dehydration can also cause crystals to form in the kidneys.
assistant
So drinking a lot is the best. Should you drink water or is anything fine?
user