Hyperthyroidism is the most common endocrine disorder in older cats, affecting quality of life significantly if untreated. Understanding signs and treatment options helps owners improve welfare for their aging cats.
Hyperthyroid cats experience chronic discomfort from elevated metabolic rate, including restlessness, weight loss, and cardiovascular strain. Many owners interpret the increased activity and appetite as signs of good health rather than disease. Prompt diagnosis and treatment significantly improves quality of life and longevity. Radioactive iodine therapy is curative in most cats and, when available, represents the gold standard treatment. The high prevalence of hyperthyroidism in older cats means that regular veterinary screening for cats over age 10 is essential for proactive welfare management.