How did that happen? Dawes attributes it to "the efforts of doctors, nurses, social workers, boy scouts, club women, first aiders, physiologists, tea ladies, Nobel Prize winners, air raid wardens, housewives, nutritionists, and psychologists."
Fighting Fit: The Wartime Battle for Britain's Health was published earlier this month by Weidenfeld and Nicholson. Read a blog post by the author for the Wellcome Library here, a post on her own website here, and read the first few pages through Look Inside at amazon.co.uk. It does not appear to be available yet in Canada, not even on Kindle.