Thyroid-Stimulating Hormone (TSH) is a hormone produced by the pituitary gland, located at the base of the brain. Its primary role is to regulate the production of hormones by the thyroid gland, which is essential for controlling metabolism, energy levels, and overall growth and development in the body. When TSH levels are high, it signals the thyroid gland to produce more hormones, while low TSH levels indicate that the thyroid is producing enough hormones. Abnormal TSH levels can lead to conditions such as hypothyroidism or hyperthyroidism, affecting various bodily functions and overall health.