"An estimated 8.2 million adults aged 18 or older in 2016 had co‑occurring AMI [Any Mental Illness] and an SUD [Substance Use Disorder] in the past year, corresponding to 3.4 percent of all adults. In addition, about 2.6 million adults had SMI and an SUD in the past year, representing 1.1 percent of all adults.¹

"In the 2015 reporting period, six states and jurisdictions (Connecticut [adults only], the District of Columbia, Louisiana, Mississippi, Oklahoma, and Puerto Rico) reported a total of 417,443 admissions to MH-TEDS [Mental Health Treatment Episode Data Set]. [Table 7.1]:

"• Of admissions who began treatment prior to the 2015 reporting period, 69 percent of admissions received treatment in community programs, 57 percent in residential treatment centers, 43 percent in state psychiatric hospitals, and 31 percent in institutions under the justice system [Table 7.1].

"For the 2012 reporting period, 32 states and jurisdictions reported that a total of 3,126,234 individuals had received mental health services; for the 2015 reporting period, 45 states and jurisdictions reported that a total of 5,235,883 individuals had received mental health services [Table 1.1].

"• More than 50 percent of the total individuals served were female in every reporting period between 2012 and 2015 [Table 1.2a].

"Of the 105,860 clients who received inpatient mental health treatment services on April 29, 2016, 32 percent were in general hospitals, 29 percent were in public psychiatric hospitals, and 28 percent were in private psychiatric hospitals."

"NSDUH includes questions that are used to identify people who needed substance use treatment (i.e., treatment for problems related to the use of alcohol or illicit drugs) in the past year. For NSDUH, people are defined as needing substance use treatment if they had an SUD in the past year or if they received substance use treatment at a specialty facility³² in the past year.^33,34

Prevalence of Marijuana Use in Lifetime, Past Year, and Past Month among Persons in the US Aged 12 or Older, by Demographic Characteristics: Number in Thousands

"• Marijuana/hashish was reported as the primary substance of abuse by 14 percent of TEDS admissions aged 12 and older in 2015 [Table 1.1b].

"• The average age at admission for primary marijuana/hashish admissions was 26 years [Table 2.1b]. Thirty-one percent of marijuana/hashish admissions were under age 20 (vs. 7 percent of all admissions combined), and primary marijuana/hashish abuse accounted for 78 percent of admissions aged 12 to 14 and 75 percent of admissions aged 15 to 17 years [Table 2.1c].

Estimated Prevalence of Cannabis Dependence or Abuse in the US

"In 2018, nearly 1 in 5 people aged 12 or older (19.4 percent) used an illicit drug in the past year, which is a higher percentage than in 2015 and 2016. The estimate of past year illicit drug use for 2018 was driven primarily by marijuana use, with 43.5 million past year marijuana users. The percentage of people aged 12 or older in 2018 who used marijuana in the past year (15.9 percent) was higher than the percentages in 2002 to 2017.

"• In 2013, among the 20.2 million persons aged 12 or older who were classified as needing substance use treatment but not receiving treatment at a specialty facility in the past year, 908,000 persons (4.5 percent) reported that they perceived a need for treatment for their illicit drug or alcohol use problem (Figure 7.10). Of these 908,000 persons who felt they needed treatment but did not receive treatment in 2013, 316,000 (34.8 percent) reported that they made an effort to get treatment, and 592,000 (65.2 percent) reported making no effort to get treatment.