The University of NSW study presented to an injury prevention conference in Finland this week showed helmets reduced fatal head injuries by about 65 per cent.
"...before and after helmet laws, and we found there was no change in the number of people cycling," he said.
"Most specialists, we've known for a long time that bicycle helmets are effective. Usually the arguments against come from groups that are on the fringe."
Helmet laws 'don't stop people riding'