Read key findings from the 2020 National Survey on Drug Use and Health (NSDUH) on substance use, mental health, and treatment by age group. Metrics in the report cover the civilian, noninstitutionalized US population ages 12 and older. Unlike other NSDUH Annual National Reports, the 2020 report has no comparisons to the previous year, because changes in survey methodology mean the indicators are not comparable to past NSDUH estimates.