In a world of constant pressure, your body deploys a secret agent to keep you safe: the stress hormone cortisol.

A biological asset so effective, its power has been harnessed medically for over 70 years. Yet when pushed too far, this trusted operative can go rogue, sabotaging your health. Join Dr Mark Nixon and his team for an evening of scientific espionage to unmask and disarm this double agent.

Presented by The University of Edinburgh