Mental Health Noncommunicable Diseases
• Research & Reports
What Is Planetary Health?
Brain Health
Our environment shapes neurological function and mental well-being, while resilient brains empower societies to adapt to and mitigate planetary challenges.
1 in 4 dementia deaths worldwide, approximately 626,000 deaths each year, is attributable to air pollution.
Brain health sits at the heart of Planetary Health, reflecting the dynamic relationship between human biology, social systems, and the environments we depend on to survive and thrive. The brain, our organ of cognition, emotion, behavior, and social connection, is uniquely sensitive to environmental conditions shaped by how we steward the planet. Rising temperatures, air and water pollution, extreme weather events, food and water insecurity, ecosystem degradation, and exposure to environmental toxins all affect neurological function, cognitive performance, and mental health across the lifespan.
20-30 minutes in natural environments can significantly improve attention, working memory, and executive function, compared with urban settings.
At the same time, healthy brains enable learning, creativity, cooperation, and collective decision-making, capacities that societies need to adapt to environmental change, design sustainable systems, and respond to crises. When environmental degradation undermines brain health, it weakens individual well-being, social cohesion, productivity, and communities’ ability to respond effectively to planetary challenges. This makes brain health both a vulnerability and a leverage point within the Planetary Health framework.
Our Brain Under Environmental Stress
Scientific evidence increasingly shows that environmental stressors act on the brain through interconnected biological, psychological, and social pathways. Heat stress disrupts sleep, cognition, and mental health; air pollution accelerates cognitive decline and increases the risk of dementia and neurodevelopmental disorders; extreme weather events drive trauma, displacement, and long-lasting effects on mental and cognitive health. These risks are not evenly distributed. Children, older adults, people with pre-existing neurological or mental health conditions, and communities facing socioeconomic disadvantage bear a disproportionate burden. A Planetary Health approach therefore requires centering on equity, prevention, and resilience.
Planetary Health Solutions for Brain Health
Crucially, many Planetary Health solutions are also brain-protective solutions. Cleaner air, climate-resilient food systems, access to green and blue spaces, urban tree canopies, reduced noise and heat exposure, and stronger social infrastructure all support cognitive function, emotional well-being, and neurological health while delivering environmental co-benefits. By explicitly integrating brain health into Planetary Health research, policy, and practice, we can better capture the full human benefits of environmental action and design interventions that strengthen both people and planet.
Resources
Mental Health Youth Voices
• News
Climate Change’s Hidden Mental Toll On Children Think Global Health.
Mental Health Noncommunicable Diseases
• Research & Reports
Environmental Neuroscience Springer Nature Link.
Life Stage and Reproductive Health Resource Scarcity
The role of medicine for the alleviation of resource scarcity: Towards a ‘Consumption and Production Medicine’ framework. The Journal of Population and Sustainability.
Despite technological progress, humanity operates beyond planetary biophysical limits and continues to face unmet needs. This paper explores the intersection of medicine, economic wellbeing and ecological sustainability in the context of global resource scarcity.
• Research & Reports
Air Pollution Climate Change
Cradle to Grave: The Health Toll of Fossil Fuels and the Imperative for a Just Transition. Global Climate & Health Alliance.
The report is the first global overview of the health harms of fossil fuels across their entire lifecycle and the human lifespan. From toxic exposures during extraction to pollution-related disease, the findings call for governments, health professionals, and civil society to accelerate a just, equitable transition away from fossil fuels. Available in English, Spanish, Portuguese, and French.
• Research & Reports
Culture and Values Governance and Policy
Culture as Climate Action: Creativity, Community and Change
From a local neighborhood in Cairo, to the cultural policy conference Mondiacult, to the United Nations’ global gathering on climate change (the Conference of the Parties – COP), this episode asks how culture and creativity can build more resilient communities and more sustainable futures.
• Podcasts
Collaboration and Partnerships Planetary Health Frameworks
Saúde Planetária Será Tema de Debate na USP
• News
Displacement and Conflict Life Stage and Reproductive Health
Child Health in the Metacrisis
• Podcasts
