New series 1/3. A "gut feeling" is more than just a poetic turn of phrase. Researchers have discovered that the gut, with its millions of nerve cells, acts as the body's second brain with a vast range of activities.
Could this hold the key to treaments for such diseases as irritable bowel syndrome? Geoff Watts examines new insights into why our gastrointestines misbehave in the way they do. Producer Adrian Washbourne