Ghrelin (pronounced /ˈɡrɛlɪn/), the “hunger hormone”, also known as lenomorelin (INN), is a peptide hormone produced by ghrelinergic cells in the gastrointestinal tract[3][4] which functions as a neuropeptide in the central nervous system.[5] Besides regulating appetite, ghrelin also plays a significant role in regulating the distribution and rate of use of energy.[6] When the stomach is empty, ghrelin is secreted. When the stomach is stretched, secretion stops.a It acts on hypothalamic brain cells both t
Source: Ghrelin – Wikipedia