Interesting timing - just today I read an article where a Norwegian doctor - also leader of his local cycling association - maintained that helmets made little difference in cycling injuries in adults. It didn't say a lot, but his opinion was basically that helmets could give a false sense of security, while only a smallish percentage of real injuries from cyclist accidents in traffic actually were head injuries. One could posit that that was precisely because they were wearing helmets, but I assume he was smart enough to factor that in and meant injuries/blows taken to the head region including helmet. Just another opinion, and as such anecdotal, but still from a medical professional with more than one anecdote to relate.
I'm surprised he didn't say anything about the relative danger of head injuries vs other injuries, though. Breaking both legs is painful and a serious injury, but it still won't kill you.
However he also said that helmets were very useful in preventing injury to children, as they tended to have the kind of accidents where helmets made a difference - low speeds and short falls.
I don't think he in general wanted to make a point against wearing helmets - it's fairly uncommon to not wear one here - but a point against thinking a helmet will keep you "safe" - and not least that getting people to cycle at all would have many more positive health effects than insisiting they wear helmets.
I think these discussions are interesting because while I personally may want to ride with a helmet at all times, I might think differently if I were doing large-scale cycle planning.
Winter riding is much less about badassery and much more about bundle-uppery. - malkin
1995 Kona Cinder Cone commuterFrankenbike/Selle Italia SLR Lady Gel Flow
2008 white Nakamura Summit Custom mtb/Terry Falcon X
2000 Schwinn Fastback Comp road bike/Specialized Jett