Hyperthyroidism is a common disease in cats caused by the overproduction of thyroid hormone by the thyroid glands. Hyperthyroidism most commonly occurs in cats around the age of 13. Cats have two ...

An epidemic of thyroid disease among pet cats could be caused by toxic flame retardants that are widely found in household dust and some pet food, government scientists reported Wednesday.

One of the most common problems in an older cat is an overactive thyroid gland. This is called “hyperthyroidism”. When too much thyroid hormone (T4) is produced cats can become hyperactive and ...