Weight LossBody WeightWeight GainDiet, ReducingObesityWeight Reduction ProgramsMolecular WeightBirth WeightObesity, MorbidBody Mass IndexOverweightAnti-Obesity AgentsEnergy IntakeBody CompositionCaloric RestrictionBariatric SurgeryExerciseCachexiaCyclobutanesDiet, Carbohydrate-RestrictedEnergy MetabolismDiet, Fat-RestrictedBehavior TherapyAppetite DepressantsEatingAdipose TissueDietFeeding BehaviorFetal WeightInfant, Low Birth WeightTime FactorsTreatment OutcomeOrgan SizeDiet TherapyLife StyleLeptinAnorexiaFollow-Up StudiesGastric BalloonDiet FadsAnthropometryBiliopancreatic DiversionPregnancyDietary CarbohydratesAppetiteDietary ProteinsDiabetes Mellitus, Type 2Risk FactorsInsulinInfant, NewbornBasal MetabolismMotor ActivityInsulin ResistanceProspective StudiesPhentermineDietary FatsPatient ComplianceAdiposityBariatricsLipidsBlood GlucoseHIV Wasting SyndromeNutritional StatusPeptide YYAnalysis of VarianceThinnessHealth BehaviorAppetite RegulationInfant, Very Low Birth WeightFood, FormulatedLiverCohort StudiesDisease Models, AnimalGhrelinTriglyceridesNutrition DisordersRisk Reduction BehaviorAnastomosis, Roux-en-YExercise TherapyRegression AnalysisGlucagon-Like Peptide 1Diet RecordsRandom AllocationMalnutritionWaist CircumferenceNutrition TherapyIntervention StudiesBody ConstitutionMice, Inbred C57BLWeaningBody Weights and MeasuresFastingLactonesRhode IslandRetrospective StudiesNutritional Physiological PhenomenaAbsorptiometry, PhotonSatiationVenomsGestational Age