Cat Senior Nutrition: Feeding Ageing Cats for Optimal Welfare

Nutritional needs change significantly as cats age. Appropriate senior nutrition supports muscle maintenance, organ health, and quality of life in older cats.

Key Facts

Senior cats have reduced ability to digest and absorb dietary protein — increased protein intake is required to maintain muscle mass
Contrary to historical practice, protein restriction in senior cats without renal disease worsens muscle wasting
Phosphorus restriction is important only in cats with established chronic kidney disease — not in healthy seniors
Senior cats often experience reduced appetite from decreased smell and taste sensitivity — food palatability management is important
Dehydration is common in senior cats — wet food diets significantly improve hydration status
Body weight and muscle condition score should be monitored monthly in senior cats

Welfare Considerations

Senior cat nutrition welfare has been significantly influenced by historical overcorrection: blanket recommendations for protein restriction in senior cats, appropriate only for CKD patients, led to widespread muscle wasting in healthy ageing cats given unnecessary low-protein diets. The welfare cost of sarcopenia — muscle loss causing weakness, reduced mobility, and impaired quality of life — from inappropriate dietary restriction is substantial. Modern senior nutrition evidence supports high-quality protein diets, wet food for hydration, and phosphorus restriction only when CKD is confirmed. Regular body weight and muscle condition monitoring provides the early warning that enables dietary adjustment before significant muscle loss occurs.

What You Can Do

Feed senior cats high-quality protein diets unless CKD is confirmed — protein restriction worsens muscle wasting in healthy seniors
Provide wet food as the primary diet component — hydration support is critical for senior cat welfare
Restrict phosphorus only on veterinary advice with confirmed CKD — not as a blanket senior cat practice
Weigh and muscle condition score your senior cat monthly — early changes enable prompt dietary response
Warm food gently to enhance palatability for senior cats with reduced appetite