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Choosing urinary-health cat food starts with moisture, then controlled minerals, a 6.0–6.5 pH target, and a vet prescription when disease is confirmed.
For the full breakdown, see our best Cat Food For Urinary Issues guide.
Knowing how to choose cat food for urinary health is mostly about three numbers: moisture, magnesium, and urine pH. The right formula keeps urine dilute, limits stone-forming minerals, and holds pH near 6.0–6.5. If your cat has a confirmed urinary condition, those targets still apply, but a veterinarian-prescribed diet is the safer place to start than any retail shelf.
Urinary Health Cat Food: The Selection Rules That Matter
A urinary-health cat food is one that keeps urine dilute, slightly acidic, and low in stone-forming minerals. This table is the short version of what to check on the label.
| Target | What to Look For | Why It Matters |
|---|---|---|
| Moisture | 75–80% in wet foods, stews, and broths | Dilutes urine and flushes minerals before crystals form. |
| Magnesium | Below 0.1% on a dry-matter basis | Lower magnesium reduces struvite crystal risk. |
| Calcium and phosphorus | Controlled, not excessive | Imbalances can contribute to stone formation. |
| Urine pH | Roughly 6.0–6.5 | Slightly acidic urine discourages crystal formation. |
| Diet type | Prescription when diagnosed; OTC for prevention | A vet-matched formula treats the actual condition. |
| Feeding plan | Feed exclusively and transition over 7–10 days | Mixing can weaken pH and mineral control. |
| Hydration support | Wet food, water fountains, multiple bowls | Extra water intake is itself a urinary-health measure. |
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