How to Use the Kidney Stone Risk Checker
Kidney stones form when calcium, oxalate, or uric acid crystallize in the kidneys or ureters, often causing severe flank pain. Low water intake concentrates urine and makes crystals more likely to form, while a diet heavy in salt and meat is another major risk factor. This checker scores your daily water intake, sodium and meat habits, and personal or family stone history to estimate your risk level.
If you've had a kidney stone before, your chance of recurrence is fairly high, and a family history also suggests a constitutional tendency toward stone formation. On the other hand, drinking enough water to produce 2-2.5 liters of urine a day can significantly lower both first-time and recurrent stone risk. Plain water is more effective than coffee or tea for this purpose.
Check the FAQ below for recommended water intake and when to see a doctor. This result is lifestyle-based reference information, not a medical diagnosis — for an accurate diagnosis, please consult a urologist.
Frequently Asked Questions
Aim for enough water to produce 2-2.5 liters of urine a day, which usually means drinking at least 2-3 liters of fluids. Drink more in hot weather or after exercise.
This is a lifestyle-based reference check, not a medical diagnosis. If you have flank pain or blood in your urine, see a urologist immediately.