We DON'T know everything! This book is so easy to read. The approach is logical and cuts to the bone. Our writer spends his time talking to the layman rather than showing off his expertise and blinding us with babble(as happens in so many 'science' texts). I enjoyed it thoroughly. It'll worry you at least once. If not, make you gasp out loud to the nearest ear. I've no doubt that many old wives will be shaken to hear her tales undone. Aside from pointing out some dangers we (who believe everything we read) can so easily put our health in, we are informed in very much the style of a concerned friend. The sharp wit is peppered about -brightening the pages just when it feels a little dark/serious. Health IS serious afterall and now I know SO much. I can't wait to get down the pub and put a few know-it alls right with a smug grin. Worth every penny. I could give it 5 stars but there's so much it didn't cover which, of course, means loads of room for sequels. I also read BAD ASTRONOMY, switching between the two. Please, PLEASE build this series.