From Peter White, University of Cardiff
Ben Heller would like to know “whether and how the science we are doing differs from the science we would do without caffeine” (27 November, p 27). I came off caffeine about four years ago. Since then my head has felt clearer, I seem to be more in charge of my intellectual faculties, and I am publishing more papers per year than I did before. This might just be coincidence, of course, so I would be curious to know what experiences others have had.
Cardiff, UK
