Diet may be an important factor in the development and progression of IBD. A previous study demonstrated that patients with ulcerative colitis were more likely to flare with increased consumption of red and processed meats. We sought to examine whether increased consumption of red and processed meats was associated with Crohn's disease (CD) flares. To do this, adults with CD were recruited from IBD Partners. Patients who were in remission were randomly assigned to groups that consumed a minimum of 2 servings/week of red or processed meat (118 patients) or not more than 1 serving per month (96 patients) for 49 weeks. The primar y outcome was relapse of CD, defined as increase in short Crohn's Disease Activity Index or a need for surgery or a need for new medication. During the trial, patients in the high-meat group reported compliance with eating 2 or more servings of red or processed meat during 98.5% of weeks compared to 18.8% of weeks for the low-meat group. In an analysis of data from the FACES trial, we found that among patients with CD in remission, amount of red and processed meat consumption was not associated with risk of flare.

People with inflammatory bowel disease, or IBD, often say that specific foods make their symptoms better or worse, but there is no good scientific evidence to support a specific diet. In this study, nearly 7,000 patients with Crohn's disease or ulcerative completed a survey about the their diet and IBD symptoms. Yogurt and rice were most often reported to improve symptoms. Vegetables, fruit, spicy foods, fried foods, milk, red meat, soda, popcorn, dairy, alcohol, high fiber foods, fatty foods, seeds, coffee and beans were most frequently reported to worsen symptoms. In general, patients with ulcerative colitis ate more fruit, vegetables, beans and popcorn than patients with Crohn's disease. Crohn's disease patients with an ostomy tended to eat more cheese, sweetened beverages, milk, pizza and processed meats than Crohn's disease without an ostomy.