Even with body positive movements in recent years, relentless messaging from the fashion industry and social media it still taking a toll.

But how can you tell if it's something your teenager is struggling with?

And and what's the best way to approach a conversation about it?

Answering these questions is Catherine Gallagher, a Christchurch-based clinical psychologist who has worked across public and private sectors for two decades, with a particular focus on children and young people.

Go to this episode on rnz.co.nz for more details