Human Growth Hormone (hGH) is produced in the anterior pituitary gland by somatotropic cells and stimulates growth in all tissues of the body, except the brain . hGH also plays a vital role in development. One-two milligrams of the hormone are produced daily, levels rise during childhood and peak during puberty . hGH is comprised of 191 amino acids with 2 disulfide bonds, it is on Chromosome 17 in band 17q23 and has a molecular weight of 21,500 D . Since hGH affects so many cells in the body there are many different diseases related to hGH. In this poster we will only focus on where hGH production is in excess.