This book is above all my testimony as a witness and fellow sufferer. I had cancer. I’m cured now, and I wanted to share what I learned with other people. Being a doctor doesn’t protect you from cancer. But because I’m a doctor and a scientist, I was able to take my knowledge to its limits and learn to look after myself. I wanted to write the book I would have liked to read – the book that, if it had existed, would have helped me to avoid falling ill, and that would have helped me learn very quickly how to give my cancer treatments the best possible chance of working.