For the most up-to date info and complete coverage on bicycle helmets, and their real population-wide efficiencies, see www.cyclhelmets.org en.wikipedia.org/wiki/Bicycle_helmet The conclusion that all should be able to agree on is that the efficiency of bicycle helmets has been a subject of decade-long science-based debate in injury prevention-, medical- and public health per-reviewed journals. Very many bicycle advocate groups, as well as entit