Jejunoileal BypassHyperlipidemiasLife StyleRisk Reduction BehaviorHealth BehaviorExercisePrimary PreventionDietHealth PromotionRisk FactorsWeight LossObesitySecondary PreventionDiabetes Mellitus, Type 2CounselingCardiovascular DiseasesPatient Education as TopicQuestionnairesWeight Reduction ProgramsMotor ActivityFood HabitsBody Mass IndexDiet TherapyDirective CounselingHealth Knowledge, Attitudes, PracticeOverweightMotivational InterviewingUnited StatesHealth EducationMetabolic Syndrome XProgram Evaluation