Youth substance use (SU) has been linked to adverse mental health outcomes. For those youth involved in public sector systems of care, reports of SU are consistently high compared to general populations. These public sector services systems of care include mental health, juvenile justice, child welfare, homeless intervention services, as well as SU service systems. In addition, minority and marginalized youth tend to report disproportionately high SU. As an example, in Hawaiʻi, youth who are Native Hawaiian (NH), Micronesian, or who identify as sexual or gender minorities not only report elevated rates of SU, but are overrepresented in public sectors. In order to reduce youth SU health disparities, access to and quality of the system of care for youth must improve. To inform systems change, this needs assessment study used qualitative methods to engage professionals in Hawaiʻi working within public sectors that may intersect with youth SU service system of care. Professionals identified several themes which have implications for practice, policy, and research: colonialism and inclusivity at the macro level, the need for policies at the exo level, meso level changes regarding family and community, and stigma and discrimination at the micro level.

Although Asian/Pacific Islanders are considered a single ethnic/racial category in national studies, Native Hawaiians and other Pacific Islanders (NHOPIs) and Asians show marked disparities in health outcomes and risk behaviors, including substance use. Currently, knowledge regarding the psychosocial mechanisms by which NHOPI ethnicity is associated with increased substance use, compared with Asian or White, is limited, especially among emerging adults. The present study tested a model in which the relationship between NHOPI ethnicity and higher substance use (i.e., current tobacco, alcohol, marijuana, and illicit drug use) was hypothesized to be mediated through higher emerging adulthood stress (e.g., feeling "inbetween," instability), higher self-reported racial/ethnic discrimination, substance use in one's social networks, and poorer mental health symptomology (i.e., depression, anxiety). Data collected at a single time-point from 2,344 college students, M age = 21.2 (SD = 2.1); 54% Women; 24% NHOPI, 49% Asian, 27% White, were analyzed by employing structural equation modeling. NHOPI and Asian ethnicity were dummy coded with reference to White. Results indicated that the association between NHOPI ethnicity and higher substance use was mediated in two steps, via higher racial/ethnic discrimination and poorer mental health symptology. NHOPI ethnicity, but not Asian, was associated with higher identification with emerging adulthood attributes, which in turn was associated with increased substance use. Implications are discussed in the context of reducing health disparities faced by NHOPIs. What is the public significance of this article?This study found that Native Hawaiian and Other Pacific Islander emerging adults, who represent a vulnerable population, may experience higher stress associated with emerging adulthood and perceived racial/ethnic discrimination (compared with Asian and White), which may, in turn, place them at higher risk for substance use.