Are people with mental illness dangerous?
When undergoing treatment, people with severe mental illnesses are no more dangerous than the general population. When untreated, this is no longer the case. There are approximately 1,000 homicides – among the estimated 20,000 total homicides in the U.S. – committed each year by people with untreated schizophrenia and manic-depressive illness. According to a 1994 Department of Justice, Bureau of Justice Statistics Special Report, “Murder in Families,” 4.3 percent of homicides committed in 1988 were by people with a history of untreated mental illness (study based on 20,860 murders nationwide).