Your thyroid gland is located at the base of your neck, right below your Adam’s apple. It is a small, butterfly-shaped gland that produces hormones that have a huge impact on your health. These hormones affect every facet of your metabolism. They affect things that go all the way from how fast your heart is beating to how rapidly you burn calories.
Your system works right when your thyroid releases the right amounts of these hormones. When your thyroid makes too much of the hormone thyroxine, your body’s metabolism can be accelerated substantially. This can result in irritability or nervousness, a rapid or irregular heartbeat, sweating or sudden weight loss. When this takes place, the condition is referred to as overactive thyroid disease.
Hypothyroidism (underactive thyroid) is more common than overactive thyroid disease. Overactive thyroid disease can begin at any age, but it rarely affects children. Approximately 500,000 people in the United States are diagnosed with overactive thyroid disease each year. About one or two in every 100 Americans will be affected by this disease.
Girls or women are the ones who are affected most often by overactive thyroid disease. In fact, up to 10 times more women than men are affected by this disease. Overactive thyroid disease occurs most often in people who are younger than age 40.
Graves’ disease is the primary cause of overactive thyroid disease. Another cause of this disease is when one or more nodules or lumps in your thyroid grow and increase their activity so that too much thyroid hormone is produced. This is known as toxic nodular or multinodular goiter.
Overactive thyroid disease can also result from a viral infection or a problem with your immune system that causes your thyroid gland to leak hormone.
There are several signs and symptoms that may be an indication of overactive thyroid disease. These include:
- Difficulty breathing
- Your heart beating too fast
- Having more bowel movements than usual
- Being sweaty
- Having itchy, red, warm skin
- Feeling weak, nervous, moody or tired
- Having fine, soft hair that falls out
- Your hands shaking
- Losing weight even though you eat as much or more than usual.


