Hypothyroidism is a medical condition that occurs when the thyroid gland, a small butterfly-shaped gland located at the base of the neck, does not produce enough thyroid hormones. These hormones, mainly thyroxine (T4) and triiodothyronine (T3), play a critical role in regulating various bodily functions, including metabolism, energy production, and overall growth and development. When hormone levels drop, it can lead to a slow metabolism, weight gain, fatigue, depression, and a host of other symptoms that can significantly affect quality of life.
The condition can be caused by a variety of factors, including autoimmune diseases like Hashimoto's thyroiditis, certain medications, radiation treatment, or iodine deficiency. Diagnosis typically involves blood tests to check levels of thyroid-stimulating hormone (TSH) and thyroid hormones. Treatment primarily includes hormone replacement therapy, with synthetic thyroid hormones such as levothyroxine being the most common form of treatment. With proper management, individuals with hypothyroidism can lead normal, healthy lives by ensuring they receive the necessary hormones their bodies need to function optimally.