Center for Traditional Medicine

CTM Curated Research

Psychedelic Assisted Therapy, Research and Indigenous Sovereignty

Research in the field of Psychedelic-assisted therapy (PAT) is relatively recent, and it has been conducted with predominantly white participants. While current systematic evidence shows a slight increase in the inclusion of non-white participants, Indigenous representation remains critically low, and there is a need for Indigenous-led governance, the integration of traditional healers, and equitable access. The development of PAT should be rooted in Indigenous sovereignty and should actively challenge the exclusionary practices often found in biomedical research.  These four studies collectively capture the current tensions between Indigenous epistemologies (ways of knowing) and the Cartesian biomedical model approach to psychedelic medicine. They illuminate the Indigenous perspective, address health equity concerns, and support the necessary decolonizing research praxis (informed by critical reflection). Key constructs influencing psychedelic science include Traditional Ecological Knowledge (TEK), respectful connections with Indigenous communities, and culturally informed healing modalities. These studies reveal structural barriers to integrating Indigenous perspectives in psychedelic clinical practice while offering solutions for creating meaningful and equitable contributions to the field.

Female figure observing kaleidoscopic design.
Female figure observing kaleidoscopic design. Photo by Yuriy Vertikov on Unsplash.

The first study, by Best, et al is a cross-sectional survey, examined PAT awareness and perceptions among 85 cancer patients in Aotearoa, New Zealand, with an emphasis on including Māori participants (n=32). The study utilized validated instruments such as the Patient Health Questionnaire-9 (PHQ-9), the Generalized Anxiety Disorder-7 (GAD-7), and the Hua Oranga, a holistic wellbeing measure for Māori and Pacific peoples. Disparities were significant, with health inequities revealed, evidenced by Māori participants having poorer psychosocial wellbeing across domains, although underlying structural determinants of health (social, economic, and political conditions that shape health outcomes), disproportionately impact Indigenous populations and stem from ongoing colonial impacts. Two areas were measured (awareness and openness to PAT); overall awareness was low, but greater awareness was associated with more favorable attitudes and a greater willingness to use PAT. The openness increased among those who prioritize effectiveness and those with more advanced cancer. This shift may indicate risk-benefit calculation when the clinical need is present. The findings highlight the need to prioritize Indigenous sovereignty in PAT development. It is essential to integrate culturally grounded frameworks that ensure Indigenous governance and participation in the development, implementation, and evaluation of initiatives.

The Second Study applied conceptual commentary, developing an ethical and governance model (grounded in UNDRIP) to inform the integration of Indigenous Knowledge Systems into psychedelic science. Authors explain the historical extraction and enduring effects; it has been a continuous, ongoing act of dispossession (including biopiracy, intellectual appropriation, and non-consensual research practices). Critiques reductionist biomedical models for the extraction of isolated elements from healing types (ceremonial, ecological, spiritual). A call for reciprocity and reparations and FPIC (Free, Prior, Informed, Consent), complete structural reconfiguration with Indigenous co-leadership, co-authorship, benefit sharing, and legal protections (e.g., Nagoya Protocol). Also advocate for Indigenous models that value community-based, relational healing, and inclusion of spiritual practices as foundational and central to therapeutic efficacy, positioning requirements for ethical psychedelic justice and relational accountability for ethical psychedelic policy and research. 

The Third study conducted a Qualitative study with semi-structured interviews grounded in an Indigenous-led, sovereignty-centered approach, structured using Kaupapa Māori methodology. They had 16 Māori healthcare professionals and students in Aotearoa New Zealand and found the following themes: greater awareness of PAT led to greater openness, Māori holistic health frameworks have potential to align (e.g., spiritual, relational wellbeing), a need for PAT education and research to expand, and the importance of ensuring access for Māori. Māori participants expressed greater concerns about PAT, possibly linked to historical (and ongoing) structural inequities, including criminalization and distrust of Western research practices. PAT is seen as compatible with Te Ao Māori and with holistic and spiritual constructs. Barriers include cost, access, stigma, policy constraints, and a lack of a culturally aligned delivery structure. Advocate for culturally safe care, with priority governance by Māori, including whānau (family) and cultural support roles. PAT has potential for an Indigenous health framework combination, but the integrative practice risks reproducing structural violence if Indigenous leadership, consultation, and community-centered system design are not used.

The fourth study was a series of detailed interviews with 16 healers from 9 distinct Amazonian cultures, using a systematic approach to identify explicit thematic meanings within the textual data and the theory design, thereby positioning Indigenous healers as primary knowledge producers. This study also provides detailed documentation of Indigenous psychedelic methodology. It demonstrates the centuries-long sophistication, in contrast to or exceeding Western clinical protocols, including practitioner training, adverse-effect management, and safety assessment. They position the plant as a conscious teacher rather than a chemical resource.

Tags: decolonial psychiatry, Entheogens, health equity, Indigenous sovereignty, Psychedelic-assisted therapy

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Referenced Research Publications

Journal of Psychoactive Drugs
2024, September 4

A Cross-Sectional Survey Investigating Māori and Non-Māori Cancer Patients’ Views on Psychedelic-Assisted Therapy in Aotearoa New Zealand

Abstract

People with cancer experience higher rates of psychological dysfunction than the general population, with extreme inequity among indigenous people. Psychedelic-assisted therapy (PAT) is a reemerging area with promising evidence as a treatment for mental health difficulties. The current study aimed to investigate the perceptions of PAT in indigenous (Māori) and non-indigenous cancer patients in Aotearoa, New Zealand. Eighty-five cancer patients (Māori n = 32, non-Māori n = 53) completed a brief anonymous survey assessing demographics, psychological factors, and awareness and perceptions of PAT. Participants were recruited online (via social media and cancer support e-mail lists) and in person at Auckland City Hospital. Maori had significantly poorer psychological well-being than non-Māori. All participants had low awareness of this novel treatment and held largely neutral attitudes. Regression analyses revealed that predictors of more favorable attitudes toward PAT included greater awareness of psychedelics, advanced cancer stage, younger age, poorer holistic well-being, greater demoralization, and prioritizing treatment effectiveness over possible risks and uncertainty. The current study provides a foundational step in exploring perceptions toward PAT in indigenous and non-indigenous groups. These results have the potential to shape future research trials investigating PAT and further highlight the importance of indigenous involvement in the psychedelic research space.

Reference

Best, G., Morunga, E., Wells, A., Allison, J., & Reynolds, L. (2025). A Cross-Sectional Survey Investigating Māori and Non-Māori Cancer Patients’ Views on Psychedelic-Assisted Therapy in Aotearoa New Zealand. Journal of Psychoactive Drugs, 57(4), 431–443. https://doi.org/10.1080/02791072.2024.2397427

Journal of Psychopharmacology
2026, January 30

Indigenous Knowledge Systems & Psychedelic Science: Towards Ethical and Reciprocal Collaboration

Abstract

Indigenous Peoples have cultivated and protected natural psychoactive medicines through ceremony, kinship, and spiritual responsibility across generations, yet their long-standing contributions have often been marginalized through extractive research, commercialization, and policy exclusion. It is Indigenous communities that have stewarded and gained expertise working with psychoactive medicines for centuries, yet they remain underrepresented within the scientific discourse. This commentary advances the case for reciprocal and equitable collaboration in psychedelic science, grounded in Indigenous sovereignty, cultural and intellectual property rights, and governance. Drawing on traditions involving ayahuasca, psilocybin, peyote, and iboga, we illustrate how Indigenous methodologies, including ritual, community-based practices, and ecological approaches, offer insights critical to both safety and efficacy. We argue that research and policy must embed free, prior, and informed consent, equitable benefit-sharing, and Indigenous leadership. Such efforts require moving past tokenistic inclusion toward meaningful collaboration and systemic change in psychedelic research that is both scientifically rigorous and culturally just. We conclude by calling for more formal, transparent, and globally legitimate convening processes, such as those modeled on WHO global consultations, that can bring Indigenous leaders, researchers, and policymakers together in dialogue. These steps represent profound acts of inclusion essential for these medicines to realize their full potential to heal and transform.

Reference

Magar, V., Robbins, M., Fernández Lobo Blanco, Ó. M. L., Ali, I. L., Anderson, B., Grob, C., Henningfield, J. E., Kryskow, P., Kuiper, H., Loizaga-Velder, A., Rush, B., Volat, M., & Iron Rope, S. (2026). Indigenous Knowledge Systems & Psychedelic Science: Towards Ethical and Reciprocal Collaboration. Journal of psychopharmacology (Oxford, England), 2698811251387104. Advance online publication. https://doi.org/10.1177/02698811251387104

New Zealand Medical Journal
2025, March 13

Māori healthcare professionals’ perceptions of psychedelic-assisted therapy: a qualitative study

Abstract

Aim

Psychedelic-assisted therapies are gaining interest as an innovative treatment for problems with mental health and addictions, and there are several clinical trials in this area currently being conducted in Aotearoa New Zealand. However, many stakeholder groups hold concerns about cultural acceptability and safety. While psychedelic substances have a long history overseas in various Indigenous populations for spiritual and ritualistic purposes, their traditional use with Māori in Aotearoa New Zealand is unclear. Given our Te Tiriti o Waitangi obligations and the significant health inequities for Māori, any new treatments should be developed considering Te Ao Māori (Māori worldview) perspectives. This study aimed to explore Māori healthcare professionals’ current awareness, attitudes and perspectives on psychedelics and psychedelic-assisted therapy. methods: To explore these aims, 13 Māori healthcare professionals were recruited to participate in semi-structured qualitative interviews investigating psychedelic awareness, knowledge and attitudes using Māori health models Te Whare Tapa Whā and Te Wheke as a framework for data collection and analysis. results: Four key themes were identified, including 1) greater awareness leads to greater openness towards psychedelic-assisted therapy (PAT), 2) more research and education about PAT is needed, 3) PAT has the potential to align with Te Ao Māori, and 4) equitable access is critical for Māori. conclusion: Our sample of Māori healthcare professionals generally supported research investigating psychedelic therapies in Aotearoa New Zealand. Improving awareness of this novel treatment is likely to influence its acceptability as a treatment option and will inform the cultural safety of its use with Māori.

Reference

Hanna, C., Morunga, E., Wells, A., & Reynolds, L. M. (2025). Māori healthcare professionals’ perceptions of psychedelic-assisted therapy: a qualitative study. The New Zealand medical journal, 138(1611), 79–92. https://doi.org/10.26635/6965.6740

Journal of Ethnopharmacology
2021, December 20

Teacher plants — Indigenous Peruvian-Amazonian dietary practices as a method for using psychoactives

Abstract

Ethnopharmacological relevance

Indigenous groups of the Amazon have developed intricate methods for the application of psychoactives, among which particularly the dieta or diet method of Peruvian-Amazonian traditional medicine stands out. It is a retreat-like intervention involving lengthy periods of social, behavioural, and alimentary restrictions, while ingesting specially prepared plant substances. The interplay of the dietary conditions and plants ingested sensitizes the dieter to receive healing, strength, guidance, and knowledge. From a clinical scientific point of view, the method has remained largely underexplored, but seems more pertinent than ever given the increasing interest in Amazonian psychoactive preparations including ayahuasca (Banisteriopsis caapi) and the burgeoning field of psychedelic-assisted therapies in general.

Aim of the study

This study offers a descriptive account and emic interpretation of the Peruvian-Amazonian dieta. More specifically we document in detail the procedure, its context and purpose of application, effects, modes of action, adverse effects, and risks, from the perspectives of a sample of Peruvian traditional healers. The Peruvian-Amazonian dieta is a multi-purpose method for making use of medicinal plants, many of which (but not all), are psychoactive; the current work especially focuses on its therapeutic applications in conjunction with psychoactives.

Methods

We interviewed 16 healers working in the Ucayali, San Martín, and Loreto provinces of Peru using a semi-structured interview approach. Interviews were audio-recorded and transcribed verbatim. The extensive data derived from these interviews were analysed by means of computer-assisted manifest qualitative content analysis using a theory-advancing approach. Over 500 coded text segments were categorized, resulting in 7 main theme clusters and corresponding sub-themes.

Results

The interviewed healers described a complex intervention with multifaceted applications (treatment, prevention, training) and effects in various domains (body, mind, spirit, energy). The process was portrayed as transformative, with benefits attributed to the effects of the so-called teacher plants in conjunction with the diet’s conditions, along with the skill of the healer guiding the intervention. Further, a detailed risk assessment revealed sophisticated safety measures and tools designed to address adverse responses. The importance of adequate training of the healer that administers the diet was particularly highlighted in this context.

Conclusions

The dieta is a central therapeutic concept and tool in Peruvian-Amazonian traditional medicine and a unique method for using psychoactive plants. Multidisciplinary health research that includes traditional treatment methods from Indigenous cultures, Amazonian and other, should not be neglected in the current global interest in psychedelic therapies; such research may in the long-term contribute to a more inclusive psychedelic research paradigm as well as healthcare practice in countries where rich traditional healing systems exist, and perhaps beyond. It may also contribute to the recognition of the Indigenous healers as not only historical forerunners, but also current leading experts in psychedelic medicine.

Reference

Berlowitz, I., O’Shaughnessy, D. M., Heinrich, M., Wolf, U., Maake, C., & Martin-Soelch, C. (2022). Teacher plants – Indigenous Peruvian-Amazonian dietary practices as a method for using psychoactives. Journal of ethnopharmacology, 286, 114910. https://doi.org/10.1016/j.jep.2021.114910