I don’t know. I’m not sure if anyone has those stats specifically. I know that head injuries are the leading cause of cyclist deaths and un-helmeted riders are three times more likely to die from head injuries
https://www.tandfonline.com/doi/full/10.1080/15389588.2024.2363476#abstract
This is data from Denmark, so a bike-centric country with good infrastructure. It still reports a significant decrease in traumatic brain injury for helmet use in a given crash.




Please don’t make me follow an NPC. That’s worse than yellow paint.