Receipt of Services among Adults in the US with Co-Occurring Serious Mental Illness [SMI] and Substance Use Disorder [SUD]

"Among the 6.9 million adults aged 18 or older in 2024 with co-occurring SMI [Serious Mental Illness] and an SUD [Substance Use Disorder] in the past year (Figures 57 and 81 and Table A.43A), 70.1 percent (or 4.8 million people) received either substance use treatment or mental health treatment in the past year, and 29.9 percent (or 2.1 million people) received neither type of treatment (Table A.70B). Stated another way, 3 in 10 adults aged 18 or older with co-occurring SMI and an SUD in the past year did not receive treatment for either condition. An estimated 48.6 percent of adults aged 18 or older with co-occurring SMI and an SUD in the past year (or 3.3 million people) received only mental health treatment, 2.3 percent (or 155,000 people) received only substance use treatment, and 19.2 percent (or 1.3 million people) received both types of treatment.

"Among the 4.8 million adults aged 18 or older in 2024 with co-occurring SMI and an SUD who received either substance use treatment or mental health treatment in the past year (Figure 81), most received only mental health treatment (69.4 percent).22 An estimated 3.2 percent of these adults aged 18 or older received only substance use treatment, and 27.4 percent received both types of treatment.22

"Among adults aged 18 or older in 2024 with co-occurring SMI and an SUD in the past year, 72.6 percent of young adults aged 18 to 25 (or 1.2 million people) and 71.0 percent of adults aged 26 to 49 (or 2.7 million people) received either substance use treatment or mental health treatment in the past year (Table A.70B). Percentages could not be calculated with sufficient precision for adults aged 50 or older with co-occurring SMI and an SUD in the past year.13"