GhrelinPeptide HormonesReceptors, GhrelinAppetiteLeptinHungerFastingHuman Growth HormoneAcylationStomachPeptide YYPostprandial PeriodEatingAnorexiaGastric EmptyingInsulinBody Mass IndexAppetite RegulationVital SignsPuberty, DelayedCachexiaBlood GlucoseObesityFeeding BehaviorBody WeightGrowth HormoneAdiponectinRadioimmunoassayGastric MucosaInsulin-Like Growth Factor INeuropeptide YInfant, Small for Gestational AgeBody CompositionEnergy MetabolismHelicobacter InfectionsHelicobacter pyloriObesity, MorbidPeptidesCircadian RhythmWeight GainEnergy IntakeWeight LossHyperinsulinismInsulin ResistanceRats, Sprague-DawleyGastrectomyReference ValuesInsulin-Like Growth Factor Binding Protein 3HydrocortisoneGlucose Tolerance TestBody ConstitutionCase-Control Studies