Knowledge center. Hyperthyroidism, also known as overactive thyroid, is a medical condition caused by an abnormally high level of thyroid hormone in the bloodstream. The thyroid gland produces an excessive amount of thyroid hormones.The thyroid gland is located in the neck.raves' disease. It is the most common cause. Graves' disease is an autoimmune condition in which the body's immune system mistakenly targets the thyroid gland and causes it to produce too much thyroid hormone.
DEFINITION of 'Federal Reserve Bank'. The central bank of the United States and the most powerful financial institution in the world. The Federal Reserve Bank was founded by the U.S. Congress in 1913 to provide the nation with a safe, flexible and stable monetary and financial system.
The Federal Home Loan Banks (FHLBanks, or FHLBank System) are 11 U.S. government-sponsored banks that provide reliable liquidity to member financial institutions (not individuals) to support housing finance and community investment.