BentMikey said:
So it's claimed, but the evidence isn't conclusive. The most I would go is that cycle helmets will prevent some cuts and scrapes, but not more serious injuries.
Evidence and studies are just not going to be conclusive though if they are based on cycling accidents that turn up in casualty. These kind of accidents are likely to be more serious and involve more than just the cyclist.
Instead you have to give more weight to anecdotal evidence and to the design of cycle helmets, in particular the forces involved and the kind of impact expected.
Falling from a bike where your centre of gravity is higher is likey to send your trunk down first with a greater risk of head impact. If the impact happens suddenly you are less likely to get a hand down than saying falling over in the street.
It's the same with mountaineering. Stonefall and the prolifertation of rocky outcrops mean head injury is more likely and more serious.
You just can't compare walking down the street or drinking to either, it's spurious and part of a different risk category.
It makes eminent sense that a helmet will provide protection beyond cuts and bruises, how far beyond is up for debate but I reckon you'd debate it less if you'd ever suffered a serious head injury. Instead you'd probably take the view that a helmet is not so inconvenient for the potential it might have to stop an injury.
Also, people might want to be aware of how a well fitted helmet designed to Ansi rather than British standards is going to be a better buy than some ill-fitted British standard designed helmet.