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Air pollution research finds walking worst commuting method

Air pollution research finds walking worst commuting method

Taipei, March 2 (CNA) The negative impact on the heart could be much worse for those in Taipei who commute on foot instead of using other forms of transport, according to research released Monday. Chuang Kai-jen (???), an associate professor from the School of Public Health at Taipei Medical University, said the risk of being exposed to particles 2.5 microns or smaller in diameter (PM2.5) is greater for those who walk to work compared with those who take the metro. The volume of exposure to PM2.5 is 42.1 micrograms per cubic meter for those who walk and 22.3 micrograms per cubic meter for those who use the metro. PM2.5 particles are considered particularly dangerous because they are usually made up of substances like heavy metals that are more toxic and can travel deeper into the lungs. The level of exposure through walking translates to 8.65 times higher risk of damaging the heart, increasing the threat of heart disease, Chuang said. The research, which tested 120 students aged 19-24 in Taipei between January and March during 2012-2014, found that walking to work is the worst option, followed by driving, taking a bus and taking the metro. (By Lung Pei-ning and Lee Hsin-Yin)


Updated : 2021-09-27 00:29 GMT+08:00