Although the majority of medical and legal professional bodies such as the World Health Organization, American Medical Association and the American Bar Association all state that alcoholism is a disease that is demonstrated by brain abnormalities, contrary assessments exist. Dr. Gene Heyman and others assert alcoholism is not a progressive, incurable disease. See disease theory of alcoholism for a full discussion. The diagnostic assessment of alcoholism in someone can include an assessment of co-morbidity with conditions such as mental illness, and domestic violence.