• ^ Good points. I just think any article like that needs to spell out what is meant by "risk". Are they saying helmets are "injury neutral" in that they are as likely to make an injury more serious as less, or are they refering to aggregate statistics like weighted severity of injury per head of population in helmet-mandatory cities vs helmet-optional (hard to judge given different roads, attitudes, etc), or are they weighing the injuries against the health benefits of exercise..

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