Hyperthyroidism Booklet

02 What is hyperthyroidism? It is caused by an excessive production of thyroid hormones from the thyroid gland in the neck (although it can occasionally come from thyroid tissue found elsewhere in the body). The thyroid hormones regulate the metabolism, so an overproduction of these hormone increases metabolic rate and can have effects on all the body’s major organ systems. The thyroid enlargement is normally due to a benign tumour (a tumour that is unlikely to spread), so many cats with hyperthyroidism can have a good quality of life for years, following diagnosis and treatment. Speak to your vet if you have any concerns. Hyperthyroidism is a condition commonly seen in middle aged and older cats. The prevalence of hyperthyroidism is estimated to be over 6% in cats older than nine years of age. It can affect all breeds and both sexes equally. Uncover the signs of hyperthyroidism