ERIC JAFFE, The Atlantic Cities
The health benefits of riding a bike are obvious, and they seem to outweigh the risks of other city hazards — collisions, pollution, biased newspaper editorials, etc. Recent data models on cycling in the Netherlands and Barcelona concluded that the upside of physical activity was much larger than the combined downsides of traffic accidents and inhaling toxins. So in addition to improving a city transportation system, bike riding might elevate public health.
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https://www.theatlanticcities.com/commute/2013/02/if-you-build-bike-share-riders-will-come/4673/
Biking in Baltimore