Welcome to What’s Up Docs?, the podcast where doctors and identical twins Chris and Xand van Tulleken cut through the confusion around every aspect of our health and wellbeing.

In this episode, Chris and Xand will shine a light on…light. They discuss why the sun can help lift our mood, and its effects on our sleep and general wellbeing. Joining them to discuss this is Professor Hester Parr, a professor of Human Geography with an interest in sunlight's effect on mental health and runs the research group Living with Seasonal Affective Disorder.

If you want to get in touch, you can email us at [email protected] or WhatsApp us on 08000 665 123.

Presenters: Drs Chris and Xand van Tulleken

Guest: Professor Hester ParrProducer: Claire JustinVideo Producer: Leon GowerExecutive Producer: Rami TzabarEditor: Jo RowntreeTech Lead: Reuben HuxtableDigital Lead: Richard BerryComposer: Phoebe McFarlaneSound Design: Melvin Rickarby

At the BBC:

Assistant Commissioner: Greg Smith Commissioning Editor: Rhian Roberts

A Loftus Media production for BBC Radio 4