Best food for cats with early kidney disease

A 13-year-old Abyssinian with slightly elevated kidney values — you're in the right place to think carefully about this. Senior cats generally need higher protein than younger cats, but when kidney values start creeping up, phosphorus restriction becomes the priority, and that changes the food choice significantly. Wet food is almost always the better format here because hydration takes real pressure off the kidneys. The right food really depends on how elevated those values are and what your vet has said so far. How old is your cat exactly, what did the bloodwork show, and what are you currently feeding them?

That's a really useful picture — early stage CKD (typically IRIS Stage 1 or 2) with a vet already on board is the best position to be in. The shift off dry food should happen fairly soon; dry food means she's getting very little moisture in her diet, which puts ongoing strain on kidneys that are already working harder than they should be. The other issue with James Wellbeloved dry is that the phosphorus level isn't controlled for renal needs — it's fine for healthy cats, but not ideal now. Can I ask: is she eating well at the moment, and does she have any fussiness around texture or flavour? That'll help me point you to the right option.

Perfect — that makes this straightforward. I'd go with Royal Canin Veterinary Renal wet food in the fish variety. It's specifically formulated for cats with CKD, with restricted but high-quality protein and tightly controlled phosphorus levels — exactly what early-stage kidney disease needs. The wet format means she's getting proper hydration with every meal, which is genuinely one of the most important things you can do for her kidneys right now. It's palatable, well-tolerated, and it's the food most vets reach for in this situation because the evidence behind it is strong. You can get it on Amazon UK without a prescription at this stage, though your vet may be able to supply it too. I'd transition her over about a week — mix it gradually with what she's on now so her stomach adjusts. One more thing: keep her water bowl topped up and consider a cat fountain if you haven't already, since moving water encourages cats to drink more.

Ideally, move to wet-only for a cat in her position. Long-term mixing with a non-renal dry food would undermine the phosphorus restriction you're trying to achieve — the dry food would keep pushing her intake up even if the wet food is pulling it down. If she really struggles without any dry texture, Royal Canin do make a Renal dry version as well, and using that alongside the wet would at least keep phosphorus controlled across both. But if she's eating the wet food well, wet-only is the cleaner approach and better for her hydration. Worth a follow-up blood test in three to four months to see how she's responding — that'll tell you if the diet is doing its job.

Great call. She's lucky to have someone paying this much attention at 13 — catching it early and acting on it genuinely makes a difference to how well cats manage CKD long term. Good luck with the transition, and if she turns her nose up at it initially, try warming it slightly — that often helps with palatability. Hope she does brilliantly.