Here’s more to the age old argument of helmets….
There is a good deal of circumstantial evidence that helmeted cyclists are more likely to crash, and data from one study  suggests that those wearing a helmet are more than 7 times likely to hit their heads if they do.
Many falls result in arm and shoulder impacts that keep an unhelmeted head just clear of the ground. A helmeted head, being twice as big and a little heavier, is more likely to hit something.
What gets me, helmets now a days aren’t very heavy at all….and they aren’t as big as they used to be back in the 80’s and 90’s…
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