Any mental illness can co-occur with any substance use disorder. Studies have shown, however, that people with certain mental health disorders are more likely to also have a substance use problem.

85-90% of those with Post-Traumatic Stress Disorder also have a substance use disorder.

About 82% of those with Antisocial Personality Disorder misuse substances.

Around 71% of persons with Bipolar Disorder use substances.

About 50% of those with Schizophrenia also use substances.

Adolescents who have Conduct Disorder, Oppositional Defiant Disorder, or Attention Deficit Disorder are up to 7 times more likely to have a substance use disorder than those without these disorders.

Adolescents with depression are 4 times as likely to use substances

Adolescents with anxiety are twice as likely to use substances compared to adolescents without anxiety.