The first study is a qualitative assessment of the impacts of climate change, conducted with 22 Indigenous stakeholders and public health service managers in Brazil. Examining themes, they found six subcategories further organized into three overarching themes: environmental degradation and climate change, vulnerability and mental health impacts, and public health policy needs. Their findings indicate that deforestation and land loss are causally linked to factors influencing mental health outcomes. The correlated impacts include increased suicide rates and substance use within Indigenous communities.
Discoveries highlighted the necessity of Indigenous governance and inclusion in decision-making processes, along with strong advocacy for public health policies that recognize the relational interconnectedness of land, culture, and health as inseparable domains.
In the second study, researchers employed a community-based participatory research approach to explore climate change-related mental health among various Indigenous peoples, including the Ogiek (Kenya) , Batwa (Uganda), Iruliga (India), Pgak’yau (Thailand), and Sámi (Sápmi). This research spanned three years and culminated in a perspective paper/methodological reflection that articulates findings through the lens of “soltalguia”, a term that represents a unique type of grief linked to environmental degradation (of one’s home environment). This shift is characterized by a profound sense of distress akin to homesickness, despite the individual still residing in their “home”, albeit fundamentally altered. Methodological challenges included the translation of terms such as “climate change” and “mental health”, which do not have a cultural equivalent, and carry the risk of stigma. Another barrier includes legislative restrictions on Indigenous peoples that prevents engagement in cultural practices that are foundational to wellness. The paper emphasizes that research must recognize Indigenous cultural rights and self-determination to be meaningful.
The third study adopted a participatory mixed-methods design involving 20 Indigenous university participants in Brazil, utilizing concept mapping. The goal was to identify actionable priorities to improve Indigenous mental health during climate change. The participants identified 42 statements, which were iteratively refined and condensed into six clusters: family support, respect and understanding, improvement actions, public policies, health actions, and Indigenous training. Findings indicate that Indigenous Eco-Relational Engagement (IERE), including traditional activities, spiritual practices, and language, is associated with improved mental health metrics. Results emphasize the importance of capacity building and the genuine Indigenous involvement in health service planning.
The fourth study used a quantitative method to examine the relationship between positive mental health and Indigenous Eco-Relational Engagement (IERE) among Anishnaabeg adults across the United States and Canada. The IERE comprises three dimensions: nature-based traditional activities (e.g., hunting, ricing, collecting herbs/medicine), spiritual practices (tobacco offerings, sweatlodge), and language use (from basic to fluent Anishinaabemowin proficiency). The study used linear regression analysis to test relationships between variables and found a significant positive relationship between IERE and mental well-being, even after adjusting for socioeconomic variables, suggesting a protective relational effect embedded within land-based and cultural practices.

