UN-commissioned study in UK, US, Ireland, Australia, Canada and New Zealand finds satisfaction rises with age

For more than half a century, the midlife crisis has been a feature of western society. Fast cars, impulsive decisions, and peak misery between the age of 40 and 50. But all that is changing, according to experts.

In a new paper commissioned by the UN, the leading academics Jean Twenge and David Blanchflower warn that a burgeoning youth mental health crisis in six English-speaking countries worldwide is upending the traditional pattern of happiness across our lifetimes.