It's a worrying trend that we're seeing more of in recent headlines - otherwise healthy people under the age of 50 being diagnosed with cancer. Evidence suggests more adults in their thirties and forties are getting cancer than ever before, leaving experts trying to figure out why. Take Kate , Princess of Wales , 42, who was told she has cancer after post-operative tests following abdominal surgery diagnosed the disease. She is known to lead a healthy lifestyle with plenty of exercise. The