Century-old tumours could reveal why more young people are getting bowel cancer

Bowel cancer has traditionally been more common in older adults, but cases in people under 50 have been climbing sharply around the world. But now researchers in the UK are digging into one of the largest archives of preserved tumours to compare historic and modern cancers and analyse how they have changed over time. Joining Anton to discuss is Prof Kevin Monahan, consultant gastroenterologist at St Mark's Hospital in London.