Profpointy
Legendary Member
Helmets don’t cause rotational injuries.
While I feel that helmet use should be a personal choice, the evidence is overwhelming that they provide protection. (Albeit, limited protection—a few millimetres of polystyrene is hardly a forcefield.)
That is flat out false: the evidence is not overwhelming or even there at all if you actually read the papers.
The oft quoted claims of 90% (or whatever it is) reduction in head injuries is from the discredited Rivera Thompson Rivera paper which even (one or more of) the original authors have retracted. Put rather flippantly it had (inadvertently) compared head injuries of helmeted children riding in parks or leafy suburbs vs inner city bare headed kids riding on busy roads. Not surprisingly it also "proved" that helmets reduced lower leg injuries even more than head injuries.
Conversely the papers covering actual head injury rates from Australia and Ontario where compulsion increased adoption rates from 10% to 90+% failed to show any improvement.
A couple or more recent and initially plausible papers I've read were also found wanting. One from Australia (quite sensibly) compared rates of head and non-head injuries then rather spoilt it by using different date ranges from the introduction of compulsion which looked awfully like cherry picking the data, then a UK one did something similar then casually mentioned lack of helmets was associated with drunk cycling without properly analysing. Increased injury rates due to drinking is hardly in doubt after all.
Anyhow, to say the evidence is overwhelming is not merely wrong but dishonest
