Companion Animals

Companion Animal: Cat Hyperthyroidism Welfare

Hyperthyroidism is the most common endocrine disease in cats, causing significant welfare problems and a range of treatment options with different welfare profiles.

Key Facts

Hyperthyroidism affects around 10% of cats over 10 years old
Weight loss despite increased appetite is a hallmark welfare-compromising sign
Hypertension secondary to hyperthyroidism causes organ damage and welfare harm
Treatment options include medication, radioiodine, surgery and dietary management
Radioiodine is the only curative treatment with excellent long-term welfare outcomes

Welfare Considerations

Untreated hyperthyroidism causes progressive weight loss, cardiac disease and hypertension with significant welfare compromise. The highly treatable nature of this condition makes early detection and treatment a welfare priority. Radioiodine provides definitive cure without ongoing medication stress.

What You Can Do

Have senior cats screened for hyperthyroidism from age 7 onwards
Discuss treatment options with your vet considering long-term welfare outcomes
Consider radioiodine treatment for appropriate candidates
Advocate for senior cat health screening programmes in veterinary practice