28 Oct 2015 --- Experts speaking at the 23rd United European Gastroenterology Week (UEG Week 2015) in Barcelona, Spain today revealed compelling evidence of the link between excess body weight and risk of colorectal cancer (CRC). John Mathers, Professor of Human Nutrition from the Institute of Cellular Medicine at Newcastle University in the UK presented data showing an overall increase of 18% in relative risk of CRC per 5 unit increase in BMI.