According to the Guardian:

More 15-year-olds are reporting low life satisfaction in the UK than anywhere else in Europe, amid what experts are describing as a “happiness recession” for British teenagers.

The group is at the bottom of European rankings in terms of life satisfaction across 27 nations, analysis by the Children’s Society reveals. In the UK 25% of 15-year-olds reported low life satisfaction, compared with 7% of Dutch children of the same age – the lowest level among any of the countries surveyed.

British girls are particularly affected, as are children from disadvantaged backgrounds, with food poverty highlighted as a key reason behind the poor well being numbers.