Study links early renal diets to longer survival in CKD cats

IDEXX-backed research published in the Journal of the American Veterinary Medical Association suggests that starting a veterinary therapeutic renal diet early in feline chronic kidney disease can meaningfully change outcomes. In the retrospective study, researchers reviewed records from 1,430 cats with early-stage CKD in the U.S. and Canada and found that cats continuously fed a renal diet had slower progression and longer survival than untreated cats. Among Stage 1 cats, renal diet use was associated with a 45% lower hazard of progression, and across Stage 1 and 2 cats, the diet group lived about five months longer on average during the study follow-up. The paper was published online January 14, 2026, and the authors include investigators affiliated with IDEXX. (pubmed.ncbi.nlm.nih.gov)

Why it matters: For veterinary professionals, the study adds real-world evidence to support recommending renal diets earlier, including in cats that may still look clinically well. That matters because diet conversations can be hard at Stage 1, when pet parents may hesitate to change food before obvious signs appear. The study also highlights an adoption gap: only 839 of 1,430 cats were treated with a therapeutic renal diet, despite the observed benefit. The findings also align with broader CKD guidance emphasizing phosphate restriction as a core intervention in cats with kidney disease. (pubmed.ncbi.nlm.nih.gov)

What to watch: Watch for how quickly these data change early-CKD counseling, diet acceptance strategies, and whether more practices begin pushing renal nutrition at Stage 1 rather than waiting for later disease. (pubmed.ncbi.nlm.nih.gov)