Do you disagree with the studies showing that helmets prevent injuries?

> A 2012 re-analysis of the 16 studies in the Attewell meta-analysis, by Elvik, found that, compared to helmeted cyclists, unhelmeted cyclists were 2.5 times more likely to sustain a brain injury; 2.3 times more likely to sustain a head injury; and 4.3 times more likely to sustain a fatal injury.

https://en.wikipedia.org/wiki/Bicycle_helmet#Science:_measur...