bicycle helmets evidence image
Pubes
Or is it just hype spread by makers of bicycle helmets.
Answer
Short answer:
wearing a bicycle helmet in everyday riding/commuting will slightly reduce the risk of an injury on the top of your head while simultaneously increasing the risk of an injury to the front of your head (face/chin) and neck (spinal column). Injuries to the brain (rotational trauma) are likely to increase, too - but in the usual studies, brain injuries are only regarded after the head has been cracked open (or they prove to be fatal). The absolute numbers for these shifts are on the boundary of statistical evidence - cycling per se is pretty safe, so there are simply too few (evaluated) accidents with head injuries to gather sufficient data for a reliable analysis.
On about the same level of statistical relevance, wearing a cycling helmet in everyday riding also seems to increase the probability of suffering an accident, most probably through risk compensation, both from the cyclist and their environment.
Regarding survivability: taking both of the above effects into account, for commuting cyclists, the net effect is zero within statistical limits. For competitive cyclist, the question doesn't arise since race rules will usually prohibit you from participating if you don't wear a helmet.
Long answer: read the studies for yourself, e.g. starting at http://www.cyclehelmets.org/
Short answer:
wearing a bicycle helmet in everyday riding/commuting will slightly reduce the risk of an injury on the top of your head while simultaneously increasing the risk of an injury to the front of your head (face/chin) and neck (spinal column). Injuries to the brain (rotational trauma) are likely to increase, too - but in the usual studies, brain injuries are only regarded after the head has been cracked open (or they prove to be fatal). The absolute numbers for these shifts are on the boundary of statistical evidence - cycling per se is pretty safe, so there are simply too few (evaluated) accidents with head injuries to gather sufficient data for a reliable analysis.
On about the same level of statistical relevance, wearing a cycling helmet in everyday riding also seems to increase the probability of suffering an accident, most probably through risk compensation, both from the cyclist and their environment.
Regarding survivability: taking both of the above effects into account, for commuting cyclists, the net effect is zero within statistical limits. For competitive cyclist, the question doesn't arise since race rules will usually prohibit you from participating if you don't wear a helmet.
Long answer: read the studies for yourself, e.g. starting at http://www.cyclehelmets.org/
Helmet safety is not a forgone conclusion after all or is it?
mark_hensl
Recent evidence indicates that cyclists who wear helmets are 14 percent more likely to have a collision per mile cycled than those without, and are more likely to suffer neck injuries. Meanwhile, increases in helmet use have never been linked with lower cycle casualty rates".
British Government study on bicycle safety August 10, 2011
Answer
The problem with "statistics" is - you can make them say anything you want. Fact: Most users of hard drugs started out on marijuana. Using that logic, you can also say that 99.9% of all alcoholics started off on MILK!
Helmets have saved my cookies both on a motorcycle & bicycle. I'll keep mine on - thank you.
Here's what Mark Twain had to say about statistics. Figures often beguile me, particularly when I have the arranging of them myself; in which case the remark attributed to Disraeli would often apply with justice and force: "There are three kinds of lies: lies, damned lies and statistics."
The problem with "statistics" is - you can make them say anything you want. Fact: Most users of hard drugs started out on marijuana. Using that logic, you can also say that 99.9% of all alcoholics started off on MILK!
Helmets have saved my cookies both on a motorcycle & bicycle. I'll keep mine on - thank you.
Here's what Mark Twain had to say about statistics. Figures often beguile me, particularly when I have the arranging of them myself; in which case the remark attributed to Disraeli would often apply with justice and force: "There are three kinds of lies: lies, damned lies and statistics."
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Title Post: Will wearing a bike helmet really improve my survivorabilty?
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