Here are some tell-tale signs of middle age. Let us know what we've missed in the comment thread
Rachel Johnson: 'To anyone under 20 I'm basically Methuselah'
The writer and editor of the Lady magazine takes issue with scientist David Bainbridge's book, which argues for the evolutionary significance of middle age
Monique Roffey: 'My 40s have been boom years, action-packed'
William Leith: 'Where did 2011 go? Why does time speed up?'
