” Ghrelin (/ˈɡrɛlɪn/; or lenomorelin, INN) is a hormone produced by enteroendocrine cells of the gastrointestinal tract, especially the stomach,[5][6] and is often called a “hunger hormone” because it increases the drive to eat.[6] Blood levels of ghrelin are highest before meals when hungry, returning to lower levels after mealtimes.[6][7] Ghrelin may help prepare for food intake[6][8] by increasing gastric motility and stimulating the secretion of gastric acid.[6] “*
Chrelin influences hunger which is one of the key elements that affects our diets. It can be either positivly or negatively depending on our needs and also depending on a properly functioning endoctrine system. It shares the task of managing our food intake with another hormone called Leptin.
*https://en.wikipedia.org/wiki/Ghrelin