HEI (Health Effects Institute)

The Health Effects Institute (HEI) is an independent organization that conducts scientific research to understand how air pollution and environmental factors impact human health. It reviews and funds studies to find evidence about the health risks associated with air quality, providing trusted information to policymakers, scientists, and the public. HEI aims to improve air quality standards and protect public health by ensuring that decisions are based on sound scientific evidence. Its work helps inform regulations and strategies to reduce pollution-related health problems worldwide.