T3 (triiodothyronine)
T3, or triiodothyronine, is a hormone produced by the thyroid gland, which is located in the front of your neck. It plays a crucial role in your body's metabolism, influencing how your body uses energy. This hormone is responsible for regulating various bodily functions such as temperature, heart rate, and growth. Without the right amount of T3, your body might have trouble processing food into energy efficiently.
The thyroid gland makes T3 by converting it from another hormone called T4 (thyroxine). Most of the T3 in your body comes from this conversion, even though the gland also produces a small amount directly. The balance between T3 and T4 is vital for maintaining healthy metabolism and overall well-being.
Doctors might check your T3 levels if you’re experiencing symptoms related to low energy, unexplained weight changes, or irregular heartbeats. An imbalance in T3 levels can be an indicator of thyroid dysfunction, which may require medical attention to correct. An accurate diagnosis and timely treatment can help manage any thyroid-related issues effectively.
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