apparently Too Much Love Can Kill You also, according to Queen. Cue the next Daily Mail scare-mongering article.
I've just checked with The Daily Fail's list of things which cause cancer and I see that candle lit-dinners, hugging, sex and the inevitable broken heart all cause cancer. So I believe Queen were correct all along, too much love can kill you in the end 
However running isn't on the list, in fact there's good evidence it can prevent cancer. Strangely that seemed to miss the front page of The Daily Fail 