Homemade dog food for kidney disease: what changes and what you can do at home

Key points

• Lowering phosphorus is the diet change that does the most to extend the life of a dog with kidney disease.
• Protein isn't cut out: it's adjusted and chosen for high quality, depending on the stage of the disease.
• Quinoa, brown rice, organ meats, aged cheese and fish with bones are all high in phosphorus.
• A homemade renal diet should be formulated by a veterinary nutritionist: generic recipes almost never meet the requirements.
• At home you can improve hydration, appetite and treats, and keep an eye on weight.

Homemade dog food for kidney disease can be a great help, especially when a dog starts losing their appetite and turns down commercial renal food. But with this disease, diet isn't a side note: it's part of the treatment, and getting phosphorus wrong speeds up kidney damage.

This page used to offer a chicken and quinoa recipe. We've taken it down, because quinoa is exactly what a failing kidney doesn't need. Here we explain what changes in a kidney dog's diet, why these diets should be formulated by veterinary nutritionists, and everything you can do yourself at home.

What the kidneys do and why diet matters

The kidneys filter the blood, remove protein waste (urea, creatinine) and excess phosphorus, and help keep the body's water and salts in balance. In chronic kidney disease they lose function gradually and irreversibly. Vets classify it into four stages (the IRIS system) based on creatinine, SDMA, protein in the urine and blood pressure.

It can't be cured, but it can be slowed down. And diet is one of the most powerful tools: studies of renal diets show that dogs live longer and have fewer uremic crises than on a normal diet.

Phosphorus: the key nutrient

When the kidneys can't clear phosphorus properly, it builds up in the blood, disrupts the hormones that regulate calcium and damages kidney tissue even further. It's a vicious circle, and lowering phosphorus in the food is how you break it.

Food	Approximate phosphorus per 100 g	With kidney disease
Quinoa (dry)	450 mg	Avoid
Brown rice (dry)	260-330 mg	Better not
White rice (dry)	100-120 mg	Good choice
Egg yolk	390 mg	In moderation
Egg white	15 mg	Very good choice
Chicken breast	210 mg	In the prescribed amount
Liver	300-390 mg	Avoid or very little
Aged cheese	500-700 mg	Avoid
Canned sardines, with bones	480 mg	Avoid

As well as choosing ingredients carefully, many dogs need a phosphate binder, a medication mixed into food that traps phosphorus in the gut. The vet prescribes it based on bloodwork; don't swap it for eggshell on your own.

Protein: less, but high quality

Protein isn't the enemy. A dog with kidney disease needs protein to avoid losing muscle, but every gram the body doesn't use creates waste the kidneys have to clear. So the amount is adjusted to the stage, and the protein chosen has high biological value, meaning the body uses almost all of it: egg white, chicken, turkey, lean beef, white fish such as hake or cod.

In the early stages, cutting protein too much can backfire, especially in older dogs that are already losing muscle mass. That's exactly the kind of decision your vet should make with the bloodwork in front of them.

Water, omega-3s and calories

• Water: diseased kidneys don't concentrate urine well, so the dog loses more water and dehydrates easily. Fresh water at all times, moist food and warm water added to the bowl.
• Omega-3s: the EPA and DHA in fish oil may help protect the kidneys. Salmon oil or a prescribed supplement is better than fish with bones, which brings phosphorus.
• Enough calories: if a dog eats too little, it burns its own muscle for fuel. A renal diet usually has a bit more fat to pack energy into small portions.
• Sodium and potassium: no added salt. Some dogs need extra potassium; that's decided from bloodwork.

Why a veterinary nutritionist should formulate these diets

A renal diet has to balance phosphorus, protein, calcium, potassium, sodium, calories and vitamins all at once, and adapt to each stage. A 2012 study from the University of California, Davis reviewed dozens of homemade recipes for dogs and cats with kidney disease published in books and online, and none of them met all nutritional requirements.

Your vet can refer you to a board-certified veterinary nutritionist (many work at university veterinary hospitals and offer remote consultations), who will give you a recipe with exact grams and the supplement that completes it. With that recipe in hand, the weekly meal planner helps you stay organized.

What you can do at home

• Help them eat. Warm the food (the smell stimulates appetite), offer small portions several times a day and try different textures. If they stop eating for more than a day, let your vet know: they may need an anti-nausea drug or an appetite stimulant.
• Mix with commercial renal food. If they refuse it, ask whether you can add a little cooked chicken or egg white to make it more appealing, and how much.
• Choose low-phosphorus treats: small pieces of apple, watermelon, cucumber or cooked carrot. No cheese, ham, bones, freeze-dried liver or jerky treats.
• Check weight and muscle mass every two weeks, and note down what they drink and eat.
• Keep the check-ups your vet schedules, with blood and urine tests and blood pressure monitoring.

If you want to cook for them, the basics in the homemade dog food guide will help you understand the parts of the bowl, but the amounts and the supplement must come from your vet's recipe.

Frequently asked questions

What should dogs with kidney disease not eat?

They should avoid foods very high in phosphorus and salt: organ meats, aged cheese, deli meats, ham, canned fish with bones, bones, quinoa, bran and most jerky-style treats. Seasoned human food isn't a good idea either. Grapes and raisins, already off-limits for every dog, are especially dangerous for diseased kidneys.

Is white rice good for dogs with kidney disease?

Yes, white rice is one of the most suitable carbohydrates for a dog with kidney disease: it's low in phosphorus, provides easily digested calories and most dogs like it. It's a better choice than brown rice or quinoa, which have considerably more phosphorus. Even so, how much rice goes into the diet should be set by your vet's recipe.

Can dogs with kidney disease eat eggs?

Cooked egg white is one of the best proteins for a dog with kidney disease: it's extremely high quality and has almost no phosphorus. The yolk, on the other hand, is high in phosphorus, so it's given in moderation or removed depending on the stage of the disease. Ask your vet how many eggs fit into their diet.

How long can a dog live with chronic kidney disease?

It depends a lot on the stage at diagnosis and how the dog responds to treatment. A dog at stage 1 or 2 can live for years with a good quality of life; at stage 4 the outlook is measured in weeks or months. A renal diet and keeping phosphorus and blood pressure under control are among the things that do most to extend that time.