[__z]

>There's a bunch of stuff you do that you don't need to do that carries more risk than anaesthetic.

I don't have any evidence for this but I suspect that the majority of brain injuries in otherwise healthy people come from trauma due to accidents. If my suspicion is true then wearing a helmet all the time might be the most effective way to avoid brain injury.

[ams6110]

Helmets protect your skull. They are not as effective at preventing brain injury.