Three out of five youth who died by suicide in the U.S. did not have a prior mental health diagnosis, signaling missed opportunities to identify children and adolescents for suicide prevention strategies, including therapy or medications to treat depression. This finding comes from an analysis of over 40,000 suicides by youth of 10-24 years of age from 2010 to 2021, recorded in the Centers for Disease Control and Prevention National Violent Death Reporting System. Results were published in the journal JAMA Network Open.