NaltrexoneNarcotic AntagonistsAlcohol AbstinenceBehavior, AddictiveFood PreferencesAppetiteAlcohol DeterrentsAlcoholismSmoking CessationCacaoSubstance Withdrawal SyndromeDietary SucroseTobacco Use DisorderReceptors, Opioid, muCuesOpioid-Related DisordersSmokingTasteNarcoticsReceptors, OpioidMorphineTaurineAffectFeeding BehaviorMethadyl AcetateHeroin DependenceDietary CarbohydratesNalorphineDisulfiramNalbuphineTemperanceDelayed-Action PreparationsAnalgesics, OpioidBuprenorphineNaloxoneEthanolHydromorphoneTreatment OutcomeDietary FatsQuestionnairesEndorphinsHeroinReceptors, Opioid, deltaSheltered WorkshopsOpioid PeptidesReceptors, Opioid, kappaDouble-Blind MethodMorphine DependenceDose-Response Relationship, DrugObesityAlcohol DrinkingEuphoriaEnkephalin, Ala(2)-MePhe(4)-Gly(5)-MethadoneContractsGeorgia (Republic)