Causes For Kidney Stone

Conditions causing an increase in salts and minerals in the urine and/or a decrease in urine volume cause stones. Common causes are:

1. Dehydration: Poor fluid intake causes concentration of salts and minerals in the urine leading to stones. Exercising without proper hydration can predispose you to stones.

2. Excessive Calcium: A condition called ‘Hypercalciuria’, which leads to excessive calcium absorption into the urine, causes the most common type of stones containing calcium. Calcium binds with phosphate or oxalate to form ‘Calcium phosphate’ or ‘Calcium oxalate’ stones respectively. Hyperparathyroidism, a condition involving over activity of the parathyroid gland, causes such excessive absorption.

3. Infection: Urinary tract infection leads to ‘Struvite’ stones. These stones are usually large and called ‘stag-horn’ stones which cause sever damage to the walls lining the urinary tract.

4. Medication: Certain diuretic, HIV drugs (Indinavir) etc.

5. Uric Acid Diathesis: A condition called gout causes excess of uric acid in the urine leading to stones.

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