Background and aims Curcumin has anti‐inflammatory properties. The aim of this study was to evaluate the effect of curcumin on improvement of the disease activity in ulcerative colitis (UC). Methods In this randomized double‐blind clinical trial, 70 patients with mild‐to‐moderate UC were randomly assigned to curcumin (1,500 mg/day) or placebo intake for 8 weeks. Disease clinical activity, quality of life, serum levels of tumor necrosis factor alpha (TNF‐α), high‐sensitivity C‐reactive protein (hs‐CRP), erythrocyte sedimentation rate (ESR) values, and complete blood count were measured. Results Changes in Simple Clinical Colitis Activity Index score were significantly higher in the curcumin than the placebo group (–5.9 ± 2.08 vs. –2.1 ± 2.6; p = .001). The scores of Inflammatory Bowel Disease Questionnaire‐9 and quality of life were significantly higher in the intervention group compared to the control group (p = .006). Furthermore, the curcumin supplementation reduced the serum hs‐CRP concentration (–6.3 ± 13.6 vs. 3.7 ± 11.6 μg/ml; p = .01) and ESR levels significantly (–1.6 ± 2.7 vs. –0.09 ± 2.4 mm/hr; p = .02) in comparison with the control group. No significant changes were observed in the TNF‐α levels of both groups. Conclusions Consumption of the curcumin supplement, along with drug therapy, is associated with significant improvement of the clinical outcomes, quality of life, hs‐CRP, and ESR in patients with mild‐to‐moderate UC.

Background and Aim: Non‐alcoholic fatty liver disease (NAFLD) is one of the most common causes of chronic liver disease. Previous studies have investigated the association between dietary patterns and NAFLD, but their results are contradictory. Therefore, we carried out this meta‐analysis to examine the association between dietary patterns and NAFLD. Methods: We searched PubMed, Web of Science, Scopus, and Google Scholar databases until November 14, 2019, to identify the observational studies on the association between dietary patterns and NAFLD. We selected three dietary patterns of Western, Prudent, and Mediterranean. A random‐effect model was used to compute the summary risk estimates. Odds ratios (ORs) that were reported for fully adjusted models and their confidence intervals (CIs) were extracted for meta‐analysis. Heterogeneity between studies was assessed using Cochran's Q‐ and I2 tests. Eighteen articles (n = 24 867 participants) were entered our systematic review and meta‐analysis. Results: We determined that Western dietary patterns (n = 8787 participants) containing high levels of processed food, red meat, high‐fat dairy, and refined grains could significantly increase NAFLD (OR = 1.56, CI = 1.27 to 1.92; P ≤ 0.001). However, the Prudent (n = 13 023 participants) (OR = 0.78, CI = 0.71 to 0.85; P ≤ 0.001) and Mediterranean dietary patterns (n = 3057 participants) (OR = 0.77, CI = 0.60 to 0.98; P = 0.41), defined by high intake of fruits, vegetables, whole grains, fish, and olive oil decreased the risk of this disease. Conclusions: We found that Western dietary patterns increased the risk of NAFLD by 56%, although the Prudent and Mediterranean dietary patterns reduced the risk of this disease by 22% and 23%, respectively.

The finding of studies on the effect of curcumin extract on metabolic factor in patients with metabolic syndrome has had arguable results. This systematic review with meta‐analysis of randomized controlled trials (RCT) aimed to analyze the effect of curcumin/turmeric on metabolic factors in patients with metabolic syndrome. The PICO strategy was used to establish the guiding question of this review. Several databases for RCT were searched until September 2018. Of the 144 articles initially identified, seven trials met the eligibility criteria. A random‐effects model with a mean weight difference (WMD) and a 95% confidence interval was performed for quantitative data synthesis. Pooled estimates of WMD were calculated between intervention and control groups using random‐effects model in the presence of high level of heterogeneity between the studies. The results showed significant improvement of fasting blood glucose (p = 0.01), triglycerides (p < 0.001), high‐density lipoprotein cholesterol (p = 0.003), and diastolic blood pressure (p = 0.007) levels. Curcumin was not associated with a significant change in waist circumference measurement (p = 0.6) and systolic blood pressure level (p = 0.269). Curcumin supplementation improves some components of metabolic syndrome.

Background: Major depressive disorder is among main worldwide causes of disability. The low medication compliance rates in depressed patients as well as the high recurrence rate of the disease can bring up the nutrition-related factors as a potential preventive or treatment agent for depression. The aim of this study was to investigate the association between dietary patterns and depression via the intermediary role of the serum folate and vitamin B12, total homocysteine, tryptophan, and tryptophan/competing amino acids ratio. Methods: This was an individually matched case-control study in which 110 patients with depression and 220 healthy individuals, who completed a semi-quantitative food frequency questionnaire were recruited. We selected the depressed patients from three districts in Tehran through non-probable convenience sampling from which healthy individuals were selected, as well. The samples selection and data collection were performed during October 2012 to June 2013. In addition, to measure the serum biomarkers 43 patients with depression and 43 healthy people were randomly selected from the study population. To diagnose depression the criteria of Diagnostic and Statistical Manual of Mental Disorders, fourth edition, were utilized. Results: The findings suggest that the healthy dietary pattern was significantly associated with a reduced odds of depression (OR: 0.75; 95% CI: 0.61-0.93) whereas the unhealthy dietary pattern increased it (OR: 1.382, CI: 1.116-1.71). The mediation analysis showed that the healthy dietary pattern was associated with a reduced risk of depression via increased serum levels of the folate and vitamin B12; however, the unhealthy dietary pattern was associated with increased risk of depression via decreased serum levels of folate and vitamin B12, based on tree adjusted logistic regression models. Conclusion: Dietary patterns may be associated with depression by changing the serum levels of folate and vitamin B12. Further studies are required to confirm the mechanism.

Aim The present study aimed to investigate major dietary patterns and their association with risk of gestational diabetes mellitus (GDM) in Yazd city located in Iran. Methods This case–control designed study was conducted at six healthcare centres. Two hundred and seventy‐eight pregnant women who referred for GDM screening participated. Dietary assessment was carried out by using a 67‐item validated food frequency questionnaire to evaluate dietary history of participants during the last year. Principal component analysis was used to identify major food patterns. Multivariable logistic regression model was employed to identify the association between dietary patterns and risk of GDM. Results Two major dietary patterns were detected. The Western dietary pattern was associated with higher intakes of sugar‐sweetened beverages, refined grain products, fast foods, salty snacks, sweets and biscuit, mayonnaise and saturated oils, while the prudent dietary pattern was associated with higher intakes of fruits, low‐fat dairy, potato, egg, fish, poultry, nuts, organs meat and red meat. Furthermore, prudent dietary pattern was negatively associated with GDM risk (OR = 0.88, 95% CI: 0.44–0.99). However, there was no significant association between adherence of the Western dietary pattern and risk of GDM. Conclusions Pre‐pregnancy adherence of the prudent dietary pattern was significantly associated with reduced risk of GDM.