PregnancyObesityPregnancy ComplicationsPregnancy OutcomePregnancy, AnimalPregnancy, EctopicPregnancy Trimester, FirstPregnancy RatePregnancy Trimester, ThirdObesity, MorbidPregnancy Complications, CardiovascularPregnancy TrimestersPregnancy TestsPregnancy, MultipleObesity, AbdominalPregnancy in DiabeticsPregnancy Trimester, SecondPregnancy, TubalPediatric ObesityBody Mass IndexPregnancy Complications, NeoplasticPregnancy in AdolescencePregnancy Complications, InfectiousAbortion, SpontaneousPregnancy ProteinsPregnancy, UnplannedPregnancy, High-RiskPregnancy, UnwantedGestational AgeRisk FactorsInfant, NewbornPregnancy Complications, HematologicPre-EclampsiaPlacentaOverweightPregnancy, ProlongedPregnancy, TwinBody WeightFetal DeathAbortion, InducedUterusPrenatal Exposure Delayed EffectsPregnancy, AbdominalPregnancy Complications, ParasiticPrevalenceAdipose TissuePregnancy MaintenanceUltrasonography, PrenatalPrenatal CareEmbryo ImplantationBirth WeightEmbryo TransferLeptinFertilization in VitroParityMaternal-Fetal ExchangeInsulin ResistanceWeight GainDietCohort StudiesProspective StudiesCross-Sectional StudiesHypertension, Pregnancy-InducedCesarean SectionMaternal AgeFetal DevelopmentFetal Growth RetardationPregnancy Reduction, MultifetalDiabetes, GestationalInfertility, FemaleProgesteronePremature BirthAdiposityWeight LossFetusMaternal Nutritional Physiological PhenomenaTime FactorsAbnormalities, Drug-InducedAnti-Obesity AgentsLactationTwinsCongenital AbnormalitiesDeciduaAnthropometryMaternal ExposureLabor, ObstetricUnited StatesObstetric Labor, PrematureInsulinEnergy MetabolismWaist CircumferenceDietary FatsBlood GlucoseRetrospective StudiesLogistic ModelsPrenatal DiagnosisChorionic GonadotropinCase-Control StudiesMetabolic Syndrome XBody Composition