NicotineAlcohol AbstinenceTobacco Use DisorderFood PreferencesBehavior, AddictiveAppetiteSmoking CessationNicotinic AgonistsAlcohol DeterrentsSmokingCacaoSubstance Withdrawal SyndromeDietary SucroseGanglionic StimulantsCuesNaltrexoneReceptors, NicotinicMecamylamineTasteCotinineAffectNicotinic AntagonistsChewing GumAlcoholismDietary CarbohydratesFeeding BehaviorTobacco Use Cessation ProductsAdministration, CutaneousQuestionnairesDihydro-beta-ErythroidineDietary FatsTarsSelf Administrationalpha7 Nicotinic Acetylcholine ReceptorObesityAzocinesTreatment OutcomeDose-Response Relationship, DrugAconitineConditioning, OperantRats, Sprague-DawleyQuinolizinesTobacco, SmokelessTobacco ProductsRewardTobaccoAnabasineBicyclo Compounds, HeterocyclicReinforcement (Psychology)Carbon MonoxideBehavior, AnimalSelf StimulationHexamethoniumDopamineBenzazepinesBungarotoxinsHexamethonium CompoundsTobacco Smoke PollutionVentral Tegmental AreaQuinoxalinesNitrosaminesSmokeAnalysis of VariancePyridinesMotor ActivityNucleus Accumbens