Exhausting effect of bike riding in cities

CYCLING to work may have an unhealthy downside, according to a London study assessing black carbon in the lungs.

Researchers collected sputum samples from five healthy, non-smoking commuters who rode to work daily and five who walked.

The cyclists had 2.3 times more carbon in their lungs, possibly caused by breathing “more deeply and at a quicker rate than pedestrians, while in closer proximity to exhaust fumes”.

A larger study was underway, said researchers who presented the data at the European Respiratory Society’s recent annual congress.

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