Kidney Stones - Types

Calcium Stones
About four out of five kidney stones are calcium stones.
These stones are mainly combinations of calcium and
oxalate. Oxalate occurs naturally in some fruits and
vegetables.


Struvite Stones
Struvite stones are almost always the result of chronic
urinary tract infections. Women have struvite stones more
often than men. They come from an increased amount of
ammonia in the urine, which then turn into struvite stones.
They are often large, and are a horn shape that can
seriously damage your kidneys.


Uric Acid Stones
These stones are formed of uric acid, a byproduct of
protein metabolism. You're more likely to develop uric acid
stones if you've undergone chemotherapy, you eat a highprotein
diet or you have certain genetic factors that
predispose you to the condition.


Cystine Stones
Very few people get cystine stones. They’re usually a result
of a hereditary disorder. This disorder causes the kidneys
to excrete a lot of certain amino acids (cystinuria).