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CHICAGO – New data from an ongoing study shows that regular meat consumption is associated with inflammatory bowel disease (IBD) flares, specifically for patients with ulcerative colitis.

The data, which was presented on May 7 in Chicago at the annual Digestive Disease Week® meeting, is based on an analysis of data from the PREdiCCt study (Prognostic Effect of Environmental Factors in Crohn’s and Colitis) in which diets of patients with IBD were tracked over 2-3 months with 2-year follow-ups. While the study itself includes nearly 3,000 patients from the United Kingdom who are in clinical remission, this analysis included 497 patients with Crohn’s disease and 520 with ulcerative colitis.

The highest level of patient-reported meat consumption was associated with doubled risk for hard flares – defined as an increase in symptoms plus elevation in c-reactive protein (CRP) and fecal calprotection (FCAL) plus a change in IBD therapy – in patients with ulcerative colitis, said study author Charlie W Lees, precio de lipitor en mexico PhD, FRCP(Ed), Western General Hospital and University of Edinburgh.

Investigators also evaluated the occurrence of soft flares, which was defined as a negative response to the question, “Do you think your disease has been well controlled in the past month or since you last logged on to the portal?”

After a median follow-up of 1,481.5 days, hard flares occurred at a rate of 5.6% per year, but it did not differ by IBD subtype. However, soft flares accumulated rapidly. Hard flares with baseline FCAL levels in the 50-250 mcg/g range, as well as FCAL levels above 250 mcg, were associated with flares.

The mean baseline total protein intake was 91.9 g per day of which 35.8 g came from animal sources. The hazard ratio for the highest vs. lowest quartile of meat intake in the ulcerative colitis group was 2.08. They found no associations between hard flares with intake of total dietary fiber, N-6 polyunsaturated acids, or ultraprocessed foods, which Dr. Lees found surprising.

“Perhaps most intriguingly, when we look at ultraprocessed food intake, no difference in Crohn’s disease, and no difference in ulcerative colitis,” Dr. Lees said.

The finding is in contradiction to a study reported at the Crohn’s & Colitis Congress this year that found additives in ultraprocessed foods appear to have deleterious effects on intestinal microbiota, while others may exert their influence through mechanisms, such as endoplasmic stress.

However, the new data are consistent with a previously reported association between meat consumption and ulcerative colitis development, and suggests that reducing meat consumption could help to reduce the risk of flare in patients with ulcerative colitis.

PREdiCCt is designed to examine dietary, environmental, genetic, and microbiotic factors that are associated with disease flares in patients with Crohn’s disease and ulcerative colitis. Investigators are evaluating potential contributions to disease flares from total animal protein intake, dietary fiber, N-6 polyunsaturated fatty acids, dietary emulsifiers, and ultraprocessed foods, and total bacterial gene count in stool samples. They aim to examine data from 2,500 microbiome samples currently being sequenced at the Wellcome Sanger Institute in Hinxton, England, to determine whether the association between meat and ulcerative colitis flares could be related, as they hypothesize, to diet-induced alterations in the gut microbiome.

The research is preliminary with many unanswered questions, said Russell D. Cohen, MD, director of the inflammatory bowel disease center at the University of Chicago.

“I think he still has to evaluate a lot of the data that he has already collected because, are you talking about meat? Are you talking about poultry? Are you talking about fish? It is interesting, but it still needs to be evaluated further before we make any conclusive decisions,” he said. Dr. Cohen was not involved in the research.

He said the presumed effect of meat consumption on disease exacerbation appeared to take years, “which is a little surprising. If you really thought that IBD was due to something in diet, you would see the response right away, so it doesn’t follow timewise. Why does it takes 5 years? It should be within 5 weeks or 5 days.”

Dr. Lees disclosed relationships with Abbvie, Takeda, Pfizer, Galapagos, and BDD Pharma, among others.

DDW is sponsored by the American Gastroenterological Association, the American Association for the Study of Liver Diseases, the American Society for Gastrointestinal Endoscopy, and the Society for Surgery of the Alimentary Tract.

This article originally appeared in GI and Hepatology News.

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