Triiodothyronine

Triiodothyronine is one of the hormones synthesized and secreted by the thyroid gland. Triiodothyronine is one of the two main thyroid hormones, along with tetraiodothyronine (T4). Both of these hormones contain iodine, hence the name iodothyronines.

Triiodothyronine plays an important role in the regulation of basal metabolism, growth and development of the body. It stimulates oxygen consumption by tissues, enhances protein synthesis and accelerates the use of fats. Triiodothyronine has a faster and stronger effect compared to thyroxine.

A lack of triiodothyronine can lead to the development of hypothyroidism and associated symptoms, such as decreased metabolism, weight gain, and dry skin. With an excess of triiodothyronine, hyperthyroidism develops with stimulation of metabolic processes, weight loss, and tachycardia.

Thus, triiodothyronine plays a key role in maintaining homeostasis and normal functioning of the body. Controlling the level of this hormone is of great importance for health.



Triiodothyronine (T3) is one of the hormones that is synthesized and released into the blood by the thyroid gland. This hormone plays an important role in regulating the body's metabolism and is a key component of the thyroid system.

T3 is formed from the thyroid hormone thyroxine (T4) by removing one molecule of iodine. This process occurs in tissues that contain the enzyme deiodinase. T3 has higher activity than T4, and its concentration in the blood is usually much lower than T4.

Triiodothyronine regulates many processes in the body, including body temperature, heart rate, oxygen consumption and the metabolism of fats, proteins and carbohydrates. This hormone also has effects on the nervous system, regulating mood, energy and concentration.

Several factors can affect T3 levels in the blood. For example, stress and illness can cause T3 levels to decrease, while physical activity and certain medications can increase levels.

Low T3 levels can lead to various health problems such as fatigue, mood changes, weight problems, cognitive decline and others. However, high T3 levels can also be associated with health problems such as hyperthyroidism.

Medical professionals may measure T3 levels in the blood to diagnose certain thyroid diseases and monitor the effectiveness of treatment.

Overall, triiodothyronine plays an important role in maintaining the health of the body. Its level in the blood must be within certain limits to ensure the normal functioning of metabolism and other processes in the body.