Low thyroid hormone

Thyroid stimulating hormone is a hormone that promotes the growth of the human thyroid gland. If the level of thyroid stimulating hormone is too low or too little, it will affect human health and cause diseases. There are many reasons for low thyroid stimulating hormone. It is necessary to find out the cause and treat it in time, especially for pregnant women. If this happens, it will affect the growth and development of the fetus.

What causes low thyroid stimulating hormone?

1. Early stage of hyperthyroidism.

2. You are taking thyroid hormone tablets and the dosage is too large.

Thyrotropin is a glycoprotein in nature and is secreted and released by the pituitary gland in the brain. Its main function is to promote the growth and development of the thyroid gland and regulate the synthesis and secretion of thyroid hormone. It can stimulate the thyroid gland to synthesize and secrete thyroid hormones, but if the thyroid gland has been damaged, it will not have this effect.

The clinical manifestations of low thyroid-stimulating hormone include chills, fatigue, slow movements, listlessness, drowsiness, slow reactions, depression, weight gain, loss of appetite, dry skin, palpitations and shortness of breath, and tinnitus.

Low TSH levels can cause hypothyroidism, a condition characterized by an underactive thyroid gland. Thyroid stimulating hormone is a hormone secreted by the pituitary gland that promotes the growth and function of the thyroid gland. The normal value should be 2-10mu/L.

TSH promotes the proliferation of thyroid follicular epithelial cells, synthesis and release of thyroid hormones. Decreased TSH is seen in pituitary hypothyroidism, hyperthyroidism caused by non-thyrotropinoma, and intake of aspirin, corticosteroids and intravenous heparin.

Hypothyroidism is a systemic hypometabolic syndrome caused by low thyroid hormone levels or thyroid hormone resistance due to various reasons. Its symptoms and signs are similar to those of some other common diseases, including fatigue, fear of cold, memory loss, weight gain, constipation, depression, etc., which are often mistaken for other conditions such as pregnancy, menopause or depression.

Under the action of thyrotropin-releasing hormone (TRH), the pituitary gland can also synthesize and release thyroid-stimulating hormone. Thyroid stimulating hormone can promote the proliferation of thyroid cells, promote the synthesis and secretion of thyroid hormone by the thyroid gland, and after the secretion of thyroid hormone increases, it can feedback inhibit the secretion of thyroid stimulating hormone.

It is regulated by triiodothyronine, thyroxine and the central nervous system in the body, and varies in a circadian rhythm, with its highest level at 2 to 4 in the morning and its lowest level at 6 to 8 in the afternoon. The detection of thyroid-stimulating hormone is the most sensitive indicator for the clinical diagnosis of primary hypothyroidism and is of great value in the diagnosis of thyroid dysfunction and lesion sites.