What is Hyperthyroidism?
Hyperthyroidism refers to an overactive thyroid gland. The thyroid gland can be considered the engine room of the cat’s body, which is responsible for the metabolism in the body and responsible for determining the speed at which all processes in the body works. It is an important part of the endocrine or hormonal messenger system in the body and affects all the organ systems including the liver, kidneys, heart, nervous system, intestines and even the skin. The primary hormone produced by the thyroid gland is thyroxin also referred to as T4 hormone. It is the overproduction of this hormone that causes hyperthyroidism. The thyroid gland is situated at the beginning of the windpipe just behind the throat in the upper part of the cat’s neck and consists of two main lobes linked together. Thyroxin or T4 is inactive when released, and is transformed into a biologically active form, T3, or otherwise called iodothyronine.