ADH (antidiuretic hormone): Signals the kidneys to reabsorb water.hGH (human growth hormone): Stimulates the growth of various tissues, including bone.Glucagon: Signals the breakdown of stored glucose in the liver.Insulin: Signals the uptake of glucose or sugar into the cell.Protein and polypeptides make up most of your body’s hormones. Amines: These are made from the individual amino acids tryptophan or tyrosine, which help make hormones related to sleep and metabolism.The sex hormones, testosterone and estrogen, are steroid-based. Steroids: These are made from the fat cholesterol.Protein and peptides: These are made from chains of amino acids, ranging from a few to several hundred.Hormones can be grouped into three main categories ( 11): They’re made and secreted by endocrine tissues or glands and then transported in your blood to their target tissues or organs where they bind to protein receptors on the cell surface. Some proteins are hormones, which are chemical messengers that aid communication between your cells, tissues and organs.
