Global Study Links Pollution and Inequality to Accelerated Brain Aging

An international study spanning 34 countries reveals that air pollution and poor housing conditions can accelerate the biological aging of the brain, while socioeconomic equality and healthcare access provide protective effects. Published in Nature Medicine, the research demonstrates that the strongest impacts result from interactions between environmental, social, and political factors. This finding underscores how structural inequalities and environmental exposures directly affect neurological health at a cellular level. For patients and communities, especially those in disadvantaged areas, the study highlights the urgent need for policy interventions addressing both pollution reduction and health equity to protect brain health across the lifespan.