Illicit Drugs may include marijuana, cocaine, heroin, hallucinogens, and inhalants, as well as the misuse of opioids, prescription pain relievers, tranquilizers, stimulants, and sedatives. The report also includes national estimates of any mental illness, serious mental illness, major depressive episode, use of mental health services and suicidal ideation among adults ages 18 or older and national estimates of major depressive episode, use of mental health services among adolescents aged 12 to 17. Trend information on these topics are also presented.