The causes of the formation of a urinary calculus may be various and depend on the nature of the calculation. Most often related to insufficient daily hydration, dietary imbalances (too much tea or chocolate, too much fat, salt or calcium), an infection of the urinary system ...
Often, at the origin of the formation of lithiasis there is an excessive concentration of a chemical substance (calcium, oxalates, uric acid ...) that tends to crystallize. Sometimes a metabolic imbalance can lead to a high concentration of these substances in the urine that will no longer be naturally expelled.
Poor drainage of the urine, due to a bladder malformation or the presence of an obstacle in the urinary tract, can also cause stagnation and promote the formation of urinary stones.
Sometimes, an imbalance in the acidity of the urine is at the origin of the formation of uric acid stones (if the urine has a pH too acidic) or ammonia-magnesium phosphates calculations (when they have a pH alkaline).
Urinary stones can also develop under the effect of taking certain drugs (based on thyroid hormones, diuretics, vitamin D ...), which modify the metabolism or promote the formation of crystals in the urine.