Urban health inequities and healthy longevity: traditional and emerging risk factors across the cities and policy implications

Abstract

Urbanization is reshaping global health, with over 55% of the world's population residing in urban areas, a figure projected to reach 68% by 2050. This demographic shift presents significant challenges and opportunities for public health, as urban environments exacerbate health disparities rooted in social determinants of health, such as economic stability, education, neighborhood conditions, and access to healthcare. Rapid urban growth, particularly in low- and middle-income countries, has led to the emergence of inequitable living conditions, environmental hazards, and limited access to essential health services, contributing to the early onset of multimorbidity and rising non-communicable disease burdens. Urbanization-driven factors such as obesogenic environments, sedentary lifestyles, air pollution, and inadequate sleep exacerbate cardiovascular and metabolic risks, while social exclusion, overcrowding, and inadequate mental health services heighten vulnerabilities. Emerging risks, including urban heat islands, noise pollution, and exposure to endocrine-disrupting chemicals, further compound urban health inequities. Effective mitigation requires multi-sectoral policies that prioritize health-promoting infrastructure, reduce environmental pollutants, foster equitable healthcare access, and address systemic barriers affecting marginalized groups. This review explores the intersections between urbanization and health inequities, emphasizing the importance of addressing traditional and emerging risk factors across the lifespan. Policy implications include promoting green infrastructure, enhancing urban mobility, expanding mental health care, and leveraging participatory governance to foster resilient and inclusive cities. By adopting an integrated approach that prioritizes social equity and sustainability, cities can mitigate health disparities and create healthier, more inclusive urban environments that support the well-being of all residents.

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