It turns out that the promotion of the wearing of bike helmets, and especially helmet laws, reduces bicycling and the public health benefits of cycling.
The best site I found for research: The Bicycle Helmet Research Foundation in the UK.
If you’re a parent and insist that your young kids wear helmets, realize that you’re likely creating a strong incentive for them to abandon bike riding when they become teenagers and to see driving a car as the only socially acceptable form of local transportation.
The Northfield Hospital, Northfield Community Services, the City of Northfield, and other organizations in the area concerned with the health and safety of the citizenry should quit the bike helmet safety promotions.
May 23, 8 am update: I’ve changed the name of the blog post from “Bike helmets are bad for the public health of Northfield” to “Bike helmet promotions are bad for the public health of Northfield.” See the discussion below.