The Case for Ditching the Bike Helmet Isn't What You'd Expect
Joyce Park stashed this in Bicycling
A large 2014 study found that bike helmets are protective against skull fractures -- which, contrary to popular belief, are not fatal -- but NOT protective against intracranial bleeding, which IS fatal.
A smaller study in London showed that helmets also have no protective effect against brain contusions. This one was notable because 41% of the injuries were caused by collisions with cars, but 38% were caused by falling off the bike... possible because 25% of all riders were drinking!
Actually, all of those are surprising. So it's better for a biker not to wear a helmet?
That's what this suggests, too: