• countries with heavy helmet use have more head injuries per 100,000 miles ridden than those with low helmet use.

    Now compare that to fatalities. There’s the answer to your second sentence.

        • That’s quite true. And they got that via sustained policy to encourage cycling. It’s been quite demonstrated that mandatory helmets actively discourage cycling, leading to both a disinvestment in infrastructure and drivers being less comfortable around cyclists (thus more dangerous)

          I am not making a point about individual choices. Anyone should feel free to wear a helmet. But public policy is a different beast, and the data on mandatory helmets laws are inconclusive as to benefit and clear as to cost.