To continue my controversy spree... GCN show yesterday was talking about a group of Dutch doctors recommending helmets for cycling. Now this is GCN, so all they were really doing was reading a
road.cc article, which in turn is based on some slightly
old news by the looks of it. I did find it kind of shocking how many cyclist die on NL roads though (229 in 2020) with at least
14,000 serious injuries. That last article also talks about substantial underestimates, but I think here we turn into the world of politicking... No idea what any of the agendas behind these estimates are (the 229 and 14,000 figures are both official government stats though).
Obviously, and I think all those sources acknowledge this, the major factor is actually the cars doing the killing... cycling also remains safe per journey mile. But I've never really got the objection to helmets; the objection to blanket helmet regs, absolutely, but to actually wearing helmets voluntarily? I do remember there were a couple of studies ages ago in... Australia? suggesting they increased risk or something. But iirc I was skeptical at the time (poorly controlled variables I think), and there certainly seem to be a whole bunch of recent studies saying they are very good at reducing head injury. Anecdotally I've had a couple of accidents (one that recent off-road one I skinned my arm on, another on road in London many years ago) where I've hit hard enough to badly damage the helmet. And I think many will have similar stories.
I dunno, I think a bit of it is that western objection to perceived threats to personal liberty - see also mask wearing etc. While blithely ignoring/supporting the most egregious actual threats to personal liberty of course (rise in right-wing politics, attachment to free market economics, conspirawoo etc).