The Health Impact of Mandatory Bicycle Helmet Laws
Piet De Jong
Macquarie University - Department of Applied Finance and Actuarial Studies; Financial Research Network (FIRN)
February 24, 2010
Risk Analysis, 2012
This article seeks to answer the question whether mandatory bicycle helmet laws deliver a net societal health benefit. The question is addressed using a simple model. The model recognizes a single health benefit -- reduced head injuries, and a single health cost -- increased morbidity due to foregone exercise from reduced cycling. Using estimates suggested in the literature of the effectiveness of helmets, the health benefits of cycling, head injury rates, and reductions in cycling, leads to the following conclusions. In jurisdictions where cycling is safe, a helmet law is likely to have a large unintended negative health impact. In jurisdiction where cycling is relatively unsafe, helmets will do little to make it safer and a helmet law, under relatively extreme assumptions may make a small positive contribution to net societal health. The model serves to focus the mandatory bicycle helmet law debate on overall health.
Number of Pages in PDF File: 10
Keywords: Bicycling, helmets, cost benefit analysis
Date posted: July 14, 2009 ; Last revised: January 10, 2012
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