| Overactive thyroid function is when the level of thyroid | | | | heart rate, and body temperature are affected by it. |
| hormones produced is excessively high. A term | | | | Since these hormones stimulate metabolism, an |
| commonly used to describe such a condition is: | | | | overactive thyroid gland can cause excessive |
| hyperthyroidism. This can affect triiodothyronine | | | | stimulation, and increase the speed of some body |
| (known as T3), as well as thyroxine (T4 for short), or | | | | systems. Often, the symptoms may appear as though |
| both types at once. T4 is the major hormone that the | | | | there has been an overdose of adrenaline |
| gland's follicular cells secrete. T3 is produced in lesser | | | | (epinephrine). Tremors and other neurological |
| quantities, but also displays a higher level of activity. | | | | symptoms can appear, including myopathy (in its |
| Blood plasma concentrations of T4 are roughly 40 | | | | neuromuscular form) and chorea (a type of involuntary |
| times that of T3. | | | | movement). |
| In general, thyroid hormones have a large impact on | | | | Numerous other symptoms can appear in this |
| the human body, so when there is overactive thyroid | | | | condition. One of these is heart palpitations, an issue in |
| function, it is understandable that it can have a major | | | | which there is an abnormality in the heartbeat and the |
| affect on the individual's physical state. Down to a | | | | patient is aware of the beating. Another is weight loss, |
| cellular level, thyroid hormone has an effect on most | | | | which in a case like this may have an increased |
| kinds of body tissue. Even processes, such as growth, | | | | appetite come along with it. |