Pollution on Beijing’s subway system could raise the risk of cancer and heart disease, researchers say. Photo: Reuters

Subway pollution may raise heart disease, cancer risk for Beijing commuters, study finds

Researchers say passengers should wear face masks underground to combat higher levels of pollutants

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Pollution on Beijing’s subway system could raise the risk of cancer and heart disease, researchers say. Photo: Reuters
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Stephen Chen

Stephen Chen

Stephen Chen investigates major research projects in China, a new power house of scientific and technological innovation. He has worked for the Post since 2006. He is an alumnus of Shantou University, the Hong Kong University of Science and Technology, and the Semester at Sea programme which he attended with a full scholarship from the Seawise Foundation.