The brain responds to daily conditions including chronic stress, poor diet quality, pollution, noise, and unstable environments that heighten cognitive load.

Prevention is protection, because reducing these pressures early and consistently strengthens lifelong resilience. Cities that prioritise safety, nourishment, and stability give every mind the chance to thrive.

Cognitive and mental health shape how people learn, remember, make decisions, cope with stress, and participate in daily life. With dementia cases projected to triple by 2050 and nearly 60% of people with dementia living in LMICs, understanding how nutrition, stress, and urban environments influence brain health is becoming a global priority.

Mental health conditions also affect more than 1 billion people worldwide, including anxiety, depression, bipolar disorder, PTSD, schizophrenia, eating disorders, and neurodevelopmental conditions. Yet the largest gaps in care, protection, and resources occur in LMICs, where stigma, financial barriers, and limited services restrict access to support.

Global strategies, such as WHO’s Mental Health Action Plan, emphasise strengthening governance, expanding access to care, scaling prevention, and improving data systems but progress remains uneven, especially in LMIC contexts.

50 million

Dementia cases will rise from 50 million to 152 million by 2050

of suicide deaths occur in LMICs

of the world lives with a mental health disorder

Mental health receives only 2% of health budgets

73%

Over 75% of people with mental health conditions in LMICs receive no treatment

10%

  • Mental health is a core pillar of global health, shaping how individuals and communities think, feel, work, and connect. Prioritising mental well-being strengthens resilience, supports stress management, and helps maintain emotional balance, factors that influence education, livelihoods, and social stability. When supported through culturally grounded practices, community care, and accessible health systems, mental health becomes a foundation for healthier, more equitable societies.

  • Stigma around mental health remains a major global health barrier, limiting access to care and preventing individuals and communities from seeking support. Reducing this stigma through open dialogue, community education, and culturally grounded compassion helps create environments where people feel safe to reach out. Mental health is an essential component of overall well-being, and every community deserves systems that uphold dignity, understanding, and equitable care.

  • Young people are shaping the future, yet face rising mental health challenges globally, influenced by education pressures, unemployment, digital environments, and social instability. Investing in youth‑centred support systems strengthens long‑term societal resilience. When communities prioritise safe spaces, mentorship, and accessible care, they help young people build coping skills that carry into adulthood. Supporting youth mental health today lays the foundation for healthier, more stable societies tomorrow.

  • Poverty, food insecurity, displacement, conflict, and climate stressors all shape mental well-being. Addressing these structural determinants is essential for building resilient communities and reducing long‑term mental health burdens. When policies prioritise housing, education, safety, and economic stability, they create environments where mental health can genuinely flourish. Tackling these root causes strengthens not only individual well-being but the collective health of entire populations.

  • A modern global‑health issue: social media, online harassment, digital overload, and the need for safe digital spaces, especially for youth. Digital environments shape identity, belonging, and self‑esteem, but they can also amplify stress, misinformation, and social comparison. Ensuring digital wellbeing means promoting media literacy, strengthening online protections, and designing platforms that prioritise safety and inclusion. Healthy digital ecosystems emerge when governments, platforms, and communities prioritise safety, inclusion, and well-being. Strengthening these environments helps protect mental health and fosters healthier online experiences for people of all ages.

  • Climate anxiety, displacement, livelihood loss, and the psychological impacts of extreme weather are reshaping mental well-being worldwide. As communities face rising uncertainty, stress and grief linked to environmental change are becoming more common. Strengthening mental health support in climate‑affected regions helps people adapt, recover, and rebuild a sense of stability. Addressing climate and mental health together is now essential for protecting both population wellbeing and long‑term resilience.

Feeding the Brain: Nutrition & Cognitive Health

Learning how diet, key nutrients, and gut-friendly ingredients can enhance mood, cognitive function, and emotional resilience

The Gut-Brain Pathway Behind Depression

Investigating how imbalances in gut microbes within the microbiota–gut–brain axis can influence depressive symptoms

Alzheimer’s Equity in Black Communities

Understanding the unequal burden of neurodegenerative disease and the systemic gaps driving disparities in diagnosis, care, and research

Global Brain Health

Around the world, brain health is shaped by climates, the environment, the food system, and the policies. When communities have stable environments, equitable nutrition, culturally grounded food practices, movement, and connection, they’re better able to sustain mental clarity, emotional balance, and cognitive resilience.

Brain health emerges from the interplay between community strengths and the wider systems that shape daily life across the lifespan.

Learning, Nutrition & Development

Early nutrition and school environments provide the foundation for attention, learning, and emotional resilience. School meals, micronutrient access, and stable routines support healthy brain development. Research shows that reducing hunger and ensuring steady nutrient intake helps children sustain focus and engage more fully in learning throughout the day.

In India, evaluations of the Mid‑Day Meal Scheme show that regular, nutrient‑rich school meals improve children’s attention, reduce fatigue, and support better classroom participation, demonstrating how nutrition policy directly strengthens cognitive outcomes.

Climate & Neuroprotection

Heat, air quality, water security, and environmental degradation influence cognitive performance and mental well-being. Climate stressors increase fatigue, impair decision‑making, and heighten emotional strain. Exposure is also linked to wider health risks from respiratory problems to heat‑related illness, deepening the long‑term toll that environmental instability takes on both body and mind.

In countries like Vietnam and Cambodia, seasonal floods have been linked to school closures, food insecurity, and increased exposure to water‑borne illness, all of which heighten stress and reduce the cognitive bandwidth families have for planning, work, and decision‑making.

Labour & Mental Load

Working conditions, gendered labour, and economic precarity shape chronic stress and cognitive load. When labour systems are unstable or unsafe, the brain carries the burden. Research shows that persistent stress hormones impair attention, memory, and emotional regulation, making daily decision‑making more difficult over time.

Across rural East Africa, women balancing farming, childcare, and household management navigate a continuous mental load shaped by limited childcare support, climate pressures, and gendered labour expectations. These overlapping demands influence focus, emotional regulation, and long‑term well-being.

Food Environment & Resilience

Food systems shape the nutrients available for memory, mood, and long‑term brain development. When communities have access to diverse, affordable foods, cognitive performance and emotional stability strengthen.

In rural Guatemala, many Indigenous households rely on maize, beans, and seasonal vegetables, meaning harvest disruptions can reduce dietary diversity and overall energy intake. These shifts influence daily focus, problem‑solving, and decision‑making because both nutrition and food insecurity directly affect cognitive performance.

Policy & Nutrition Equity

Agricultural policy, food pricing, trade systems, and social protection shape population‑level brain health. Equitable food systems reduce stress, improve nutrition, and strengthen cognitive outcomes across generations. When these policies fail, communities face higher food insecurity and chronic stress, amplifying the long‑term cognitive and social costs across entire populations.

In Indonesia, fluctuations in rice prices and reductions in fuel subsidies have periodically increased household food costs, pushing low‑income families toward cheaper, less diverse diets. These pressures increase financial stress and reduce adults’ capacity to plan and make decisions, while limiting the stability children need for learning.