A virtual, culturally grounded intervention helped urban American Indian and Alaska Native emerging adults reduce several measures of substance use and anxiety, according to a randomized clinical trial published in JAMA Network Open. The study examined two online programs designed for young adults who may face limited access to culturally relevant health services after moving to or growing up in urban communities. Both interventions were associated with reductions in cannabis use and substance-related consequences, while participants in the TACUNA program reported additional improvements in the amount of alcohol and cannabis they used, their exposure to peers using certain drugs, and their anxiety symptoms.
The findings address a difficult public health challenge. American Indian and Alaska Native emerging adults living in cities can be geographically distant from tribal communities, cultural resources, and specialized behavioral health services. Conventional interventions may not fully reflect their identities, community relationships, or experiences of navigating urban environments. By delivering the programs virtually, researchers sought to reduce barriers related to transportation, location, scheduling, and availability while creating a space where participants could connect with others who shared similar cultural backgrounds.
The trial used randomization, a research method in which participants are assigned by chance to different intervention groups. This approach helps investigators compare outcomes between groups while reducing the likelihood that differences in participants’ backgrounds or initial behaviors will explain the results. In this study, both groups received culturally grounded virtual support focused on reducing alcohol and other drug use. The design allowed researchers to evaluate whether one approach produced broader changes across substance use, social environments, and emotional well-being.
Participants in both groups experienced reductions in cannabis use and in the negative consequences associated with substance use. Consequences can include interpersonal conflict, difficulty meeting responsibilities, impaired decision-making, or other harms related to drinking or drug use. A reduction in these outcomes is clinically important because substance-related harm does not always depend solely on how frequently a person uses a substance. Even when use continues, changes in patterns, context, or risk-taking may reduce its effects on health and daily life.
The TACUNA group showed a wider pattern of improvement. Participants reported decreases in the quantity of alcohol and cannabis they used, rather than only reductions in consequences or overall cannabis use. They also reported spending less time around peers using cannabis and heroin. Social exposure is a significant factor in substance-use behavior: frequent contact with people who are actively using drugs can increase opportunities, normalize risky behavior, or make it more difficult to change personal habits. Reducing that exposure may therefore be an important component of prevention and recovery-oriented interventions.
Anxiety also declined more substantially among TACUNA participants. Anxiety and substance use can reinforce one another in complex ways. Some people may use alcohol or drugs in an attempt to manage distress, while substance use can worsen sleep, mood regulation, and physiological arousal over time. A program that addresses both behavior and emotional health may be more effective than one focused exclusively on consumption. The results do not establish that the intervention directly caused every reported improvement, but they indicate that culturally grounded virtual care may influence multiple connected dimensions of well-being.
The cultural component of the interventions is central to interpreting the findings. Cultural grounding does not simply mean adding references to a participant’s heritage to a standard treatment model. It can involve shaping discussions around community values, identity, belonging, tribal relationships, historical experiences, and the realities of living away from tribal lands. The study’s authors emphasize the value of bringing American Indian and Alaska Native emerging adults together to discuss strategies for reducing alcohol and drug use while strengthening social connections to their tribal communities in urban settings.
The success of virtual recruitment and intervention delivery is also notable. People who are difficult to reach through traditional clinics or community programs may be more willing or able to participate online. Virtual formats can expand the geographic range of a study and allow participants to engage from their homes or other familiar settings. At the same time, online care depends on reliable internet access, private space, suitable devices, and participant willingness to engage through digital platforms. These practical considerations will be important as researchers assess whether similar programs can be sustained and scaled.
The study does not suggest that one virtual intervention can address every form of substance-related risk, nor does it eliminate the need for in-person tribal, medical, and behavioral health services. Instead, its findings point toward a flexible model that combines evidence-based behavior-change strategies with cultural connection and peer support. For urban American Indian and Alaska Native emerging adults, interventions that recognize both their individual goals and their relationships with tribal communities may offer a more relevant path to reducing harm. Further research will be needed to determine how long the reported improvements last, which elements of TACUNA are most influential, and how the program performs across different cities, tribes, and age groups.
Subject of Research: Virtual culturally grounded interventions for alcohol and other drug use among urban American Indian and Alaska Native emerging adults.
Web References: https://doi.org/10.1001/jamanetworkopen.2026.27878
References: JAMA Network Open. Randomized clinical trial of two virtual culturally grounded interventions for substance use among urban American Indian and Alaska Native emerging adults. DOI: 10.1001/jamanetworkopen.2026.27878.
Keywords: American Indian and Alaska Native health, emerging adults, virtual intervention, culturally grounded care, substance use, alcohol use, cannabis use, heroin exposure, anxiety, urban populations, tribal communities, randomized clinical trial.
