Cat Geriatric Nutrition: Evidence-Based Feeding for Senior and Supersenior Cats

Nutritional management of senior cats is a high-impact welfare intervention, with evidence-based feeding strategies significantly affecting disease progression and quality of life.

Key Facts

Cats over 11 years are considered senior; over 15 years, supersenior with distinct nutritional requirements
Protein digestibility decreases with age in cats — senior cats require higher protein intake, not less
Chronic kidney disease affects 30-50% of cats over 15 and requires careful phosphorus restriction
Cognitive dysfunction syndrome in cats is associated with oxidative stress — antioxidant-enriched diets show promise
Muscle mass loss (sarcopenia) is the leading cause of reduced quality of life in geriatric cats and is partially diet-responsive

Welfare Considerations

Geriatric cat nutrition welfare is frequently undermined by the mistaken belief that senior cats need lower protein diets. The evidence is contrary — protein digestibility declines with age, meaning senior cats need more high-quality protein, not less, to maintain muscle mass. The exception is cats with advanced CKD where phosphorus restriction takes priority. Individualized nutritional plans based on current disease status, body condition score, and muscle condition score deliver far better welfare outcomes than generic senior diets.

What You Can Do

Schedule a nutritional assessment with your veterinarian for any cat over 10 years
Use body condition scoring AND muscle condition scoring to track geriatric cat nutritional status quarterly
Avoid automatically switching older cats to reduced-protein senior diets without veterinary guidance