==Mental illness and the brain==
Scientists who adhere to a purely physical model of mental health regard mental illness as disorders of the brain. <ref>"Mental health disorders ... such as [[depression]], [[bipolar disorder]], [[schizophrenia]] and even [[borderline personality disorder]] are medical disorders of the brain." [http://www.mental-health-today.com/index.htm Mental Health Today] </ref> Genetic studies of a large number of people with schizophrenia show links to more than 100 genes including several associated with the immune system. Scientists believe that schizophrenia is linked to a genetic predisposition.<ref>{{cite news|url=http://www.pbs.org/newshour/bb/pinpointing-genetic-links-schizophrenia-may-open-doors-better-treatment/|title=Pinpointing genetic links to schizophrenia may open doors to better treatment|work=PBS Newshour|date=July 24, 2014|accessdate=July 25, 2014}}</ref>
==Notes==