Navigating Food Changes in Cats with Kidney Disease


If you’re caring for a cat with Chronic Kidney Disease (CKD), you know this journey is full of learning curves. One of the most common, and often most frustrating, challenges is their constantly changing relationship with food.

As I shared in my recent TikTok video, my cat Tiger keeps me on my toes. One day she devours her Royal Canin, the next she turns her nose up at it. I used to think I was doing something wrong until I found immense support and wisdom in online CKD cat groups. There, I learned a crucial lesson: This isn't defiance; it's a symptom of the disease.

@nolacrazycatlady

Did you know that it is common for cats with kidney disease to frequently change up their food interest? I did not realize this until I joined cats with kidney disease groups. Sometimes it's they don't eat because of nausea, which is where anti-nausea meds and appetite stimulant come in and help. Along with the subQ fluids. However, Tiger switches between the various foods shown in the video. Sometimes she likes added water (which is great for her hydration). I personally warm her warm food in small amounts as she does not eat a lot at once. A small spoon full, a tiny bit of extra water, and microwave for 13 seconds. Other mixes I've done is adding water to hard food, sometimes she wants it dry as is. On more difficult days I top her food of choice with some @Friskies with gravy - just a small amount for the added flavor. @Chewy is the best about getting orders here quick - especially when we need to reorder whichever food she has interst in. So our personal goto is @Royal Canin ans @Hill’s Pet Nutrition Feel free to share your tips you have for your CKD cats!

♬ suara asli - Dewiiiiiiii 👑 - Fiqoh

Why Do CKD Cats Become Picky Eaters?

The reason behind the pickiness is often multifaceted:

Nausea: This is a huge factor. CKD can cause a buildup of toxins in the bloodstream that lead to persistent nausea. A cat can’t tell you they feel sick; they just know that the food in front of them makes them feel worse.

Changed Sense of Taste/Smell: The metabolic changes from kidney disease can alter how food tastes and smells to our cats, making their once-favorite meals suddenly unappealing.

General Malaise: Simply not feeling well can lead to a lack of appetite.

This is where a partnership with your vet is essential. Medications like anti-nausea pills (e.g., Cerenia) and appetite stimulants (e.g., Mirtazapine), combined with subcutaneous fluids to combat dehydration, can make a world of difference in making your cat feel well enough to even consider eating.

Our Strategy: Flexibility is Key

The number one tip I’ve learned is to be flexible. Having a variety of kidney-friendly foods on hand is a lifesaver. Our personal go-to brands are:

But even with these, Tiger’s preferences change daily. Here’s what we do:
  • The Texture Test: Sometimes she wants pâté, other times she prefers chunks in gravy. Sometimes she wants her dry kibble (Royal Canin Renal F or Hill's k/d) completely dry, other times I add a little water to make a gravy and boost her hydration.
  • The "Food Topper" Trick: On difficult days, I add a tiny amount of a high-value, hydrating food like Friskies Gravy Lovers as a topper. Just a teaspoon is often enough to entice her to eat the underlying prescription diet.
  • Warm It Up! This has been a game-changer. I warm her wet food for about 13 seconds in the microwave. It enhances the aroma, making it more enticing.
    • Crucial tip: Always stir thoroughly and test the temperature on your wrist to ensure there are no hot spots!
  • Small, Frequent Meals: Instead of large meals that can overwhelm her, I offer small, spoon-sized amounts throughout the day.

You Are Not Alone

This path can feel lonely and stressful. You just want them to eat! The best advice I can give is to be patient with yourself and your cat. What works today might not work tomorrow, and that’s okay.

I’m incredibly grateful for retailers like Chewy that get our urgent food orders to us quickly when Tiger suddenly decides she’s all about a particular food again.

To all the other CKD pet parents out there: What are your best tips and tricks? What magic combination has worked for your furry friend? Share your experiences in the comments below—we can all learn from each other.

Sending strength and purrs to everyone fighting this fight alongside their cats.

Disclaimer: I am not a veterinarian. This article is based on personal experience and shared community knowledge. Always consult with your veterinarian for medical advice tailored to your cat's specific needs. This post may contain affiliate links, but I only recommend products and services I use and trust.

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