‘Get shredded in six weeks!’ The problem with extreme male body transformations

Men’s Health magazine has transformed many men – and its own fortunes – by featuring extreme muscle makeovers. But does changing shape fast have a dark side?

Simon Cowell says giving up mobile phone has made him happier

Not using phone is ‘a strange experience but really is good for you’, music producer says

Karley Sciortino: the sex blogger and Slutever presenter redefining sexuality

Sciortino – a real-life Carrie Bradshaw – uses humour, parody and satire to open up conversations about sex

Headlines making you anxious? Delay reading them

There’s a trick to staying calm but well-informed: take your time catching up with the news

The Guardian view on sleep deprivation: who can afford forty winks?

Editorial: Smartphones are only part of the picture; sleep problems are both cause and consequence of social disadvantage

Homeopathic ‘scams’ could be advertised on prime-time television

Consumer advocate warns lack of regulation could lead public to fall for ‘loopy claims’

Is everything Johann Hari knows about depression wrong?

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?

Johann Hari: ‘I was afraid to dismantle the story about depression and anxiety’

The writer and author’s new book, Lost Connections, explores the problems with our understanding of mental health

Is everything you think you know about depression wrong?

In this extract from his new book, Johann Hari, who took antidepressants for 14 years, calls for a new approach

I listened to 75 self-help podcasts in 10 days. This is how much they helped

Are there any gems in six months’ worth of wellness podcasts to help you fulfil New Year resolutions? Or do they all boil down to essentially the same advice?