On Aug 28, 9:19*am, judith wrote:

If a junior member of the club was to ask your advice as an
experienced cyclist - does wearing a cycle helmet overall reduce the
risk of injury to the head - what would you say?

In some circumstances yes, in others it may increase the risk. It is
less effective the more severe the impact.
Wearing a helmet is no substitute for sensible riding. If you wear
one, wear it properly.
Treat it as only reducing minor scratches and bruises, anything over
that is a lottery.

...d