Understanding anxiety and mental health stigma

Pete Etchells: On the one hand, anxiety is a serious and debilitating disorder. On the other, it can be a useful evolutionary response to threat. Understanding how anxiety works might help to destigmatise mental health issues

Should I be more emotional?

Some studies have found that a positive mental attitude and not bottling up feelings can lead to a longer life, but the evidence is not conclusive

Why buffaloes and crickets help us relax

Richard Vine: Prince William has admitted that the sounds of African animals help him chill out. But not all creatures have the same effect on everyone. So what would your choice be?

Ellen Forney: a graphic memoir of bipolar disorder

John Crace: For years cartoonist Ellen Forney struggled to find effective treatment for her condition. Now she has created Marbles: Mania, Depression, Michelangelo & Me, a deeply personal hand-drawn book that details her experiences

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