Preventing cat urinary problems with diet

Losing a cat to a urinary blockage is genuinely traumatic to witness, even second-hand — and it makes complete sense that you're now thinking carefully about your own cat's health. Urinary issues in cats are worth taking seriously: while blockages are far more dangerous in male cats due to their narrower urethra, female cats can still develop crystals, cystitis, and FLUTD, and diet is one of the most effective levers you have for prevention. A vet check matters most when there's an active problem, but for a healthy cat you're looking to protect, we can absolutely talk through what helps. Can you tell me a bit about your cat — is she male or female, how old, what symptoms if any are you seeing, and what are you currently feeding her?

That's a really understandable reaction, and honestly the best time to think about this is exactly when there's nothing wrong yet. Prevention is so much easier than treatment. Before I point you toward anything specific — what are you currently feeding her? Wet food, dry food, or a mix of both? And roughly how much water would you say she drinks?

That combination — primarily dry food and low water intake — is honestly the most common setup we see with cats who eventually develop urinary crystals or cystitis. Cats are naturally low-thirst animals because in the wild they'd get most of their moisture from prey, so a dry-food-only diet means their urine can become quite concentrated over time, which encourages crystal formation. The single most impactful thing you can do is increase moisture in her diet, either by switching to wet food or moving to a urinary-support dry food alongside regular wet meals. Given she's healthy and you're in prevention mode, I'd recommend Royal Canin Urinary Care Adult dry food. It's formulated to reduce the urinary pH and mineral concentrations that lead to the most common crystal types in cats, and it's widely available on Amazon UK. It's not a prescription diet, so you don't need a vet visit to buy it — it's designed for healthy adult cats as an ongoing preventive. I'd pair it with at least one wet food meal a day if you can, and consider a cat water fountain, which genuinely does increase how much most cats drink.

Good question — yes, they're different. Royal Canin Urinary S/O is a prescription diet designed to dissolve existing struvite crystals and is used under vet supervision when there's already a diagnosed problem. Urinary Care is their over-the-counter maintenance food aimed at healthy cats where you're trying to reduce risk in the first place. For a cat with no symptoms and no diagnosis, Urinary Care is the right choice — it gives you meaningful protection without being more intervention than the situation calls for. If she ever does develop symptoms, that's when you'd get a vet to assess whether something like S/O becomes appropriate.

You're doing the right thing by being proactive. Royal Canin Urinary Care plus a wet food meal daily and a fountain is a genuinely solid prevention setup — you're addressing the main risk factors for a dry-food cat. Keep an eye out for any changes in litter box habits, straining, or blood in urine, and if you ever see those, go straight to the vet rather than waiting. But for a healthy five-year-old with no history of issues, what you're putting in place now gives her a really good foundation.