Inflammatory bowel disease (IBD) is a group of immune-mediated chronic disorders that are divided into two major types of ulcerative colitis (UC) and Crohn's disease (CD). Dietary intakes is an important component of lifestyle that affect the severity of disease. In this study, we aimed to investigate the association between dietary intakes and Gastrointestinal Symptom-Rating Scale (GSRS) in Patients with Ulcerative Colitis.

This cross-sectional study was conducted on patients with ulcerative colitis at the Alimentary Tract Research Center. Patients recorded their food intakes on three days. Food intakes were analyzed by Nutritionist IV software. Data were analyzed using SPSS version 17.0

Sixty patients were eligible for the study and completed it. Thirty nine participants was female (65 %). The mean age of participants was 36.4 ± 10.3. The dietary intakes of patients were Energy (1948.39 ± 686.02 kcal/day), Carbohydrate (47.25 ± 12.60%), Protein (13.04 ± 4.87%), Fat (39.91 ± 13.98%), SFA (8.38 ± 2.93%), MUFA (15.96 ± 5.59%), PUFA (11.17 ± 3.91%). Patients that intake higher MUFA in their diet had lower GSRS (32.3 ± 4.3) significantly (P-value=0.04).

The results of study showed that higher dietary intakes of MUFA have related to lower gastrointestinal symptoms in patients with ulcerative colitis.