Thyroid cells utilize iodine in the body to synthesize and secrete thyroxine, which is then secreted into the bloodstream and participates in metabolism and tissue development. If thyroid disease occurs, the secretion of thyroxine will change, either increasing or decreasing, leading to a series of symptoms. Let's take a look at what secretes thyroid hormones.

I. What Secretes Thyroid Hormones?

Thyroid hormones are secreted by thyroid cells, which utilize iodine to synthesize and secrete thyroxine, ultimately secreting it into the bloodstream to participate in metabolic tissue development and other processes. Therefore, if the thyroid gland develops a disease, it can lead to increased or decreased thyroid hormone levels, clinically known as hyperthyroidism or hypothyroidism, resulting in a series of clinical symptoms. It is recommended that patients with abnormal thyroid hormone levels seek prompt medical attention, undergo complete thyroid function tests, thyroid B-ultrasound, and other exams to identify the specific disease and initiate appropriate treatment. If hyperthyroidism is diagnosed, anti-thyroid treatment is needed; if hypothyroidism is diagnosed, thyroid hormone supplementation is required.

II. What Are the Symptoms of Abnormal Thyroid Hormone Levels?

Abnormal thyroid hormone levels refer to abnormal elevations or reductions in T3, T4, or TSH measured in thyroid function tests. Elevated T3 and T4 levels in thyroid function tests generally indicate symptoms of hyperthyroidism, such as weight loss, fatigue, irritability, and high metabolism. Patients may have a large appetite but still lose weight, and severe cases may be complicated by cardiac symptoms, including tachycardia, chest tightness, and shortness of breath. On the other hand, abnormally low T3 and T4 levels in thyroid function tests generally suggest hypothyroidism or thyroid insufficiency, resulting in symptoms such as myxedema, frequent fatigue, low fever, and swelling of the skin and face. These symptoms may not improve significantly with rest, but symptoms of hypothyroidism can be significantly alleviated and thyroid function normalized through thyroid hormone supplementation or treatment with levothyroxine. Therefore, it is advisable to consult and undergo detailed diagnosis at a reputable hospital for patients with abnormal thyroid hormone levels and undergo systematic and standardized treatment targeting the underlying cause.