Why is anxiety and depression increasing in the UK?

Figures show a significant rise in mental health disorders among 16 to 24-year-olds, but why? Dr Jennifer Dykxhoorn (UCL Psychiatry) interprets what has caused such an explosion in mental distress and what, if anything, can be done to bring down the numbers.

Listen: BBC Radio 4 'The Briefing Room' (from 1 min 20 secs)