Helmets are a problem to discuss because evidence shows they may do harm.
If promoted they have to focus on serious head injury instead of people just enjoying their cycling with the freedom machine.
Australian Cyclist 1991, Helmet Law discourages cycling, Riding numbers plummet’ refer;http://www.cycle-helmets.com/australian-cyclist.html
'Mandatory Can Have Unexpected Consequences, Civil Liberties Australia, 25 Nov. 2008http://www.cla.asn.au/Article/081125Bik ... Policy.pdf
Erke and Elvik (Norwegian researchers) 2007 stated: "There is evidence of increased accident risk per cycling-km for cyclists wearing a helmet. In Australia and New Zealand, the increase is estimated to be around 14 per cent."
Erke A, Elvik R, Making Vision Zero real: Preventing Pedestrian Accidents And Making Them Less Severe, Oslo June 2007. page 28 http://www.toi.no/getfile.php/Publikasj ... 7-nett.pdf
The Case Against Bicycle Helmets and Legislation, Velocity, Munich 2007 http://www.ta.org.br/site/Banco/7manuai ... helmet.pdf
Robinson 1996 report, Table 2 shows data for children in NSW. The equivalent number of injuries for pre law level of number of cyclists increased from 1310 (384 head + 926 other injuries) in 1991 to 2083 (488 head + 1595 other injuries) in 1993. For NSW the helmet laws reduced children’s safety. The increased injury rate was 59%, from 1310 to 2083.
Robinson DL; Head injuries and bicycle helmet laws; Accid Anal Prev, 28, 4: p 463-475, 1996 http://www.cycle-helmets.com/robinson-head-injuries.pdf
You can start to see the problem in discussing helmets. Widespread promotion without proper warning and with many reports including DfT reports covering up the issues to an extent.
UK charties promoting helmets, BRAKE, Headway, RoSPA, BHIT, all in the same boat, promoting a product without fully disclosing information or providing misleading claims.