Scotland has the highest rate of Multiple Sclerosis in the world. This progressive neurological disease can lead to disability, balance problems and paralysis.
But Scotland also happens to be the centre of research into MS, much of it focussing on a new generation of drugs which could help the body heal itself.
Charles ffrench-Constant is the Professor of Multiple Sclerosis Research at the MRC Centre for Regenerative Medicine at The University of Edinburgh.
Four Thought is a series of talks which combine thought provoking ideas and engaging storytelling.
Recorded live in front of an audience during the Edinburgh International Festival, speakers take to the stage to air their latest thinking on the trends, ideas, interests and passions that affect our culture and society.
Producer: David Stenhouse.