The Observer has published an excerpt from Johann Hari’s new book challenging what we know about depression. But do his own claims and arguments stack up?
Byron Katie was deeply depressed when a radical change left her joyful. She now uses her secret to help others – whether brutalised by war or merely stressed
Playing Thatcher? Dab on Bluebell. Got a part in Hairspray? Reach for the Madame Rochas. We lift the lid on how actors use smells – from the finest fragrances to cheap tinned mackerel – to nail a role