Unfortunately, in trying to ‘fix’ a cat’s unnatural alkaline urinary pH – caused by human greed in the first place – pet food manufacturers created even more problems by adding urinary acidifiers in the form of dl methionine, etc., which led to the formation of calcium oxalate (CaO) crystals/stones in many cats. Suddenly, there were far more patients suffering with CaO crystals/stones than there were patients with struvite crystals/stones.
What cat food is good for struvite crystals? | The Cat Site
Because of the lack of moisture in kibble, cats get dehydrated, the urine becomes too concentrated, and plant-based ingredients in dry food causes the urine to become too alkaline. The combination of alkalinic and concentrated urine makes cats prone to forming struvites. To eliminate struvite crystals, the goal is to create a more acidic and diluted urine.
Best canned food for preventing struvite crystals? | The Cat Site
The cause of struvite crystals in cats is most often the result of eating dry cat food. Due to the lack of moisture in the diet, the urine becomes too concentrated and highly alkaline.
Struvite crystals and food | The Cat Site