Never before have I read a book that made me laugh so much on a packed tube that I had to put my sunglasses on to hide the tears. ‘This Is Going To Hurt’ are the secret diaries of a junior doctor. Adam Kay kept notes over the years about his encounters and experiences from his early days in medicine in 2004 right up until he’s a senior registrar in 2010. The first 60 or so pages are so funny that I ended up having conversations with my fellow rush hour commuters (chatting to strangers on the London Underground is as a rule not something you tend to do) who all wanted to know why I was laughing so much. I must have done wonders for his book sales. Some of Adam Kay’s stories about what happened on the wards are so gasp out loud extraordinary that the only thing you can do is laugh – often in horror. He has a brilliant way with words, his wit is in evidence throughout, his comic timing perfect. But the further into the book you get, the more serious it becomes. Let’s just say after reading some of the stories about life on a labour ward, I’m glad I’ve already had my babies. His tales make the pressure on NHS staff all too clear – from the grueling shifts, the missed holidays and family occasions to the exhaustion of working such incredibly long hours. It all really takes its toll. And then there’s the ending. It pulls you up short. I gasped out loud, but there was absolutely no laughter. This Is Going To Hurt has been such a success that the BBC’s turning it into a TV series. But as always, with great books, do read it first.