“In the course of my military career I had been shot at, blown up and even experienced a couple of helicopter crashes, and always came away with barely a scratch on me,” says Captain John Culling, a veteran of the Royal Regiment Of Scotland. “But when I got diagnosed with kidney cancer, I felt as if my own body had started to attack me. I just couldn’t deal with it. I went from being a 60‐year‐old guy who was very fit and healthy, to being given a diagnosis of cancer. It really affected my head