The PRognostic Effect of Environmental Factors in Crohn's and Colitis (PREdiCCt)

This is a major study that is now being launched. This is the first study of its kind and is specifically directed toward understanding how environmental factors and the gut microorganisms influence IBD flare and recovery. For the PREdiCCt study, the investigators hope to recruit 1500 people in remission from Crohn's disease or ulcerative colitis (illness under control) from 28 inflammatory bowel disease clinics across the UK. What investigators hope to achieve: 1. Finding out the environmental and dietary factors for patients to avoid because they trigger flare. 2. Finding out behaviours for patients to adopt because they bring about remission. 3. Finding out what the microorganisms that predict flare look like. 4. Gaining information which helps future studies aimed at finding better diets for IBD sufferers. 5. Developing ways of gathering information online from IBD patients about their well-being that doctors can routinely use. Observational cohort, n=3100