Bicycle Helmet Laws
In 1987 U.S began to adopt laws on wearing helmets for bicycle riding. In a majority of bicyclist deaths, the most serious injuries are to the head, helmet use has been estimated to reduce the odds of head injury by 50%, and the odds of head, face, or neck injury by 33%. In 1989 a study in the New England Journal of Medicine, riders with helmets had an 85% reduction in their risk of head injury and an 88% reduction in their risk of brain injury.
source - wikipedia.org













