Dr. Chris van Tulleken, a leading advocate for reforming the food system and regulating ultra-processed foods (UPFs), will deliver the prestigious Royal Institution Christmas lectures this year. His talks will explore how food has shaped human evolution, the critical role of the microbiome as a previously unrecognized "organ," and strategies for healthier eating to benefit both personal health and the planet.

In a conversation with Nicola Davis, Van Tulleken delves into the lectures, the complexities of understanding UPFs' health impacts, and his advice for a healthier Christmas dinner. Madeleine Finlay captures their insights in a special Christmas edition of Science Weekly.

Disclaimer: This podcast is taken from The Guardian.