GhrelinReceptors, GhrelinPeptide HormonesAppetiteEatingLeptinPeptide YYStomachAppetite StimulantsHuman Growth HormoneGrowth HormoneAppetite RegulationFastingAcylationHungerGastric EmptyingPostprandial PeriodReceptors, G-Protein-CoupledInsulinGrowth Hormone-Releasing HormoneFeeding BehaviorNeuropeptide YSatiety ResponseEncyclopedias as TopicEnergy MetabolismBody WeightConservation of Energy Resources