Definitions, scope, and origin of the health-related self-help group movement -- An international tour of addiction-related mutual help organizations -- Does self-help group participation produce positive substance abuse, psychiatric, and medical outcomes? -- A different perspective on change in self-help organizations: spirituality, identity, life stories, friendship networks, and politicization -- Government, health care organization, and clinical interactions with self-help organizations -- Epilogue: Summing up, moving forward