Pure OCD: a rude awakening

You mentally undress your friends, Tony Blair, the lollipop lady. Your thoughts are X-rated. You wonder if you're a paedophile – or just losing your mind. Rose Bretécher describes the nightmare – and dark comedy – of living with pure OCD

What do we really know about the effects of screen time on mental health?

Pete Etchells: A recent briefing from Public Health England warns that too much screen time is causing emotional problems in children. But is it that simple?

The 20 online talks that could change your life

Tom Meltzer: From TED talks to online seminars, video channels crammed with inspirational and thought-provoking lectures are educating us on everything from town planning and depression to body language, animal morality and dangers of sugar in just a few minutes. Here is our pick of the best

We don’t know if antidepressants work, so stop bashing them

Pete Etchells: Recent attacks on antidepressants simplify a complicated picture about their effectiveness, and people with depression suffer for it

This column will change your life: the guru who didn’t believe in gurus

'The Theosophical Society decided Jiddu Krishnamurti was the messiah. Awkwardly,' Oliver Burkeman says, 'Krishnamurti came to believe this was bunkum'