The neuropeptide and gut hormone Ghrelin is an endogenous ligand for the growth hormone (GH)-secretagogue receptor (GHSR) within the central nervous system. This pathway has received a great deal of attention and heavy study within the last decade because of its large role in numerous physiological processes including feeding and body weight homeostasis (1, 2). In particular, Ghrelin is a key regulator of reward-based eating behavior (2, 3).
