OPINION - Kate Middleton's secret is now out, and it’s tragic. After this cancer diagnosis, we must all rally behind her

So, the secret is out. After all the speculation, all the online prurience, we now know the reason for Kate’s no-show over the last few months. She has cancer. The diagnosis isn’t the death sentence it once was, but it still, as she says, “a huge shock”, especially in a woman of 42 with an exemplary lifestyle.