(VIA copenhagenize.com) Piet de Jong, Professor of Actuarial Studies at Macquarie University in Sydney, has worked out cycling helmet could cost billions in net health terms. His research, Evaluating the Health Benefit of Bicycle Helmet Laws, found:
Using estimates suggested in the literature of the health benefits of cycling, accident rates and reductions in cycling, suggest helmets laws are counterproductive in terms of net health. The model serves to focus the bicycle helmet law debate on overall health as function of key parameters: cycle use, accident rates, helmet protection rates, exercise and environmental benefits. Empirical estimates using US data suggests the strictly health impact of a US wide helmet law would cost around \$5 billion per annum. In the UK and The Netherlands the net health costs are estimated to be \$0.4 and \$1.9 billion, respectively.