The Thyroid-stimulating hormone or TSH:
TSH stimulates the thyroid gland to make thyroid hormones, the thyroid is compulsory for metabolism, energy, growth, and development.
THS is produced by the pituitary gland. It regulates the production of hormones by the thyroid gland, the thyroid hormones are thyroxine and triiodothyronine.
Thyroxine and triiodothyronine regulate and maintain the metabolic rate, heart, brain develop, bones and muscle control.
The normal range of TSH levels is 0.4 to 4.0 mIU/L (milli-international units per liter)
When the thyroid gland does not produce enough thyroid hormone this is hypothyroidism and when the thyroid gland produce enough thyroid hormone this is hyperthyroidism.