Weight LossBody WeightWeight GainMolecular WeightBirth WeightDiet, ReducingObesityWeight Reduction ProgramsBody Mass IndexObesity, MorbidOverweightBody CompositionAnti-Obesity AgentsEnergy IntakeFetal WeightInfant, Low Birth WeightCaloric RestrictionBariatric SurgeryOrgan SizeExerciseEatingEnergy MetabolismDietCachexiaFeeding BehaviorTime FactorsCyclobutanesDiet, Fat-RestrictedPregnancyInfant, NewbornBehavior TherapyDiet, Carbohydrate-RestrictedLeptinTreatment OutcomeAnthropometryLife StyleInfant, Very Low Birth WeightDiet TherapyFollow-Up StudiesRisk FactorsAnorexiaDietary ProteinsInsulinProspective StudiesDietary CarbohydratesAppetiteDiet FadsGastric BalloonDietary FatsDiabetes Mellitus, Type 2Motor ActivityBiliopancreatic DiversionGestational AgeLiverWeaningBody Weights and MeasuresBasal MetabolismAdiposityThinnessNorepinephrine Plasma Membrane Transport ProteinsInsulin ResistanceLipidsCohort StudiesNutritional StatusRandom AllocationRegression AnalysisWeight LiftingCattleInfant, Extremely Low Birth WeightDisease Models, AnimalPatient CompliancePhentermineBody ConstitutionHealth BehaviorBreedingAmino AcidsTriglyceridesFood, FormulatedSex FactorsAppetite RegulationNutrition DisordersLitter SizeSwineBariatricsHIV Wasting SyndromePeptide YYGhrelinBlood PressureMice, Inbred C57BLAge FactorsWaist CircumferenceIdeal Body WeightRetrospective StudiesDose-Response Relationship, DrugQuestionnairesSurgical Procedures, Minimally InvasiveAnimal FeedElectrophoresis, Polyacrylamide GelMuscle, SkeletalLactation