Cycling and walking a good thing – even in polluted cities – CNBC

However, the new study, conducted by researchers from the Centre for Diet and Activity Research (CEDAR), a collaboration between the University of Cambridge, University of East Anglia, and the Medical Research Council, found that the risks from air pollution would not “negate the health benefits of active travel in the vast majority of urban areas worldwide,” according to a news release from the University of Cambridge.

“Our model indicates that in London health benefits of active travel always outweigh the risk from pollution,” Marko Tainio, who led the study, said in a statement on the university’s website.

“Even in Delhi, one of the most polluted cities in the world – with pollution levels 10 times those in London – people would need to cycle over five hours per week before the pollution risks outweigh the health benefits.” Tainio added.

The team used computer models to examine the risks and benefits of differing levels of physical exercise and pollution in cities around the world. Their study was published in the journal Preventive Medicine.

“Whilst this research demonstrates the benefits of physical activity in spite of air quality, it is not an argument for inaction in combatting pollution,” James Woodcock, a senior author on the paper, said.

“It provides further support for investment in infrastructure to get people out of their cars and onto their feet or their bikes – which can itself reduce pollution levels at the same time as supporting physical activity,” Woodcock added.