Radioactive iodine treatment for hyperthyroid cats | Cat Specialist Services

Hyperthyroidism Explained / FAQ

Cat Specialist Hyperthyroidism
Cat Specialist Hyperthyroidism
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Hyperthyroidism is caused by an overactive thyroid gland and is a common problem in cats over 10 years of age. It is the most common hormonal (endocrine) disease in cats and an important cause of illness in senior and geriatric cats around the world. More than 95% of cats are over 9 years of age.

Hyperthyroidism causes serious health consequences such as heart disease and weight loss. Common signs are increased hunger, weight loss, vomiting and behaviour changes such as crying and agitation.

Hyperthyroidism is a life-threatening condition, however it is treatable and curable in many

The gold standard treatment for cats (and humans) with hyperthyroidism is radioactive iodine treatment. This is the administration of a single oral capsule of radioactive iodine. This treatment has few, if any side effects and thyroid hormone levels are normal in 80% of cats by 4 weeks and 95% of cats by 6 months.

Below are some frequently asked questions about hyperthyroidism.


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