The Health Effects Institute (HEI)

The Health Effects Institute (HEI) is an independent organization that studies how air pollution affects human health. It conducts scientific research to understand the ways pollutants impact our bodies and informs policies to reduce health risks. HEI collaborates with experts and uses rigorous methods to provide evidence-based insights, aiming to improve air quality and public health. Its work helps governments, communities, and industries make informed decisions to protect people from harmful air pollution exposure.