I recently finished Bad Science and it really is essential reading. I know I've used that description for a few non-fiction books this year, but this one really is top of the pile - seems I was saving the best until last. From Complementary and Alternative Medicine, to TV Nutritionalists, PR Companies, Pharmaceutical Companies, Health Scares, the role of the Media and the truly chilling chapter 'The Doctor will Sue You Now', Ben Goldacre dissects the claims made and the science (or lack of) behind them with humanity and humour.
And it is always 'a bit more complicated than that'
Do yourself a favour and read it. (and yes, actually, I did know off the top of my head the difference between median, mode and mean :) )