Hormones are chemical messengers that play a vital role in regulating many body functions. Among them, the thyroid hormones TSH, T3, and T4 are key to maintaining energy, metabolism, and overall well-being. Understanding how these hormones work and the factors that influence them can help you take better control of your health. What are TSH T3 and T4 Hormones TSH stands for Thyroid Stimulating Hormone, which is produced by the pituitary gland. It signals the thyroid gland to produce two main hormones: triiodothyronine (T3) and thyroxine (T4). These hormones regulate metabolism, heart rate, digestion, and body temperature. photo by national cancer institute on unsplash How TSH Works in the Body TSH acts as a manager, instructing the thyroid gland on how much T3 and T4 to release. If T3 and T4 levels drop, the pituitary gland produces more TSH to stimulate the thyroid. If T3 and T4 levels rise too much, TSH production decreases. This feedback loop keeps the thyroid balanced. Role of T...