Struvite crystals are a mineral that can form in a cat’s urinary tract and are often associated with bladder infections. Struvite crystals are more common in cats with high magnesium or alkaline urine pH. They can also be more common in overweight cats or have a diet high in magnesium and protein. If struvite crystals are not treated, they can lead to bladder stones and potentially cause urinary blockages, which can be life-threatening. If you suspect that your Maine Coon may have struvite crystals, it is crucial to have them inspected by a veterinarian as soon as possible. The vet will likely recommend a change in diet and possibly a course of antibiotics to treat any underlying infection.