What Do Clinical Trials Indicate About the Fat Burning Potential of AO Prime Lab Peptides Effects of oral administration of a synthetic fragment of human growth hormone on lipid metabolism American Journal of Physiology Endocrinology and Metabolism American Physiological Society AOD 9604 targets the fat signaling region of growth hormone, activating lipolysis while leaving insulin and IGF 1 unchanged. Growth hormone regulates fat metabolism through a specific domain in its molecular structure, the amino acids Central and Peripheral Molecular Targets for Antiobesity Pharmacotherapy