This research project aimed to develop a culturally appropriate Asian Inflammatory Bowel Disease Diet for the Malaysian population, based on the Crohn's disease exclusion diet (CDED). The study will be conducted in inflammatory bowel disease patients in University Malaya Medical Centre, which are ulcerative colitis and Crohn's disease patients. The objectives of this study are to assess the impact of diet in clinical outcome and gut microbiota changes in patients with inflammatory bowel disease (IBD). The study duration spans 24 weeks, during which comprehensive follow-ups will be conducted at 0, 6, 12, and 24 weeks, respectively. At each follow-up session, participants will be requested to provide stool and blood samples for meticulous assessment of clinical and biochemical responses.