Invaluable resource: cycle to live - the facts

There are stacks of 'facts' on the web about cycling and health, but are they true? We've written 'Cycle to live - the facts' as a springboard for you if you've got an essay or project to produce, an article to write, or someone to persuade, and you need ideas, facts, figures and, crucially, the sources. Or if you're just interested in the studies that produced the statistics.