Overactive thyroid (hyperthyroidism)
The thyroid gland regulates a lot of functions in the body. It is said to be overactive if it makes too many thyroid hormones. This can lead to symptoms such as weight loss, sweating, nervous restlessness and a rapid heartbeat. An overactive thyroid increases the risk of cardiovascular disease.
Underactive thyroid (hypothyroidism)
If you constantly feel tired, have a slow pulse and constipation, you may wonder why. These types of symptoms can be caused by various things, but they are all typical of an underactive thyroid. Blood tests can help you find out for sure.
