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Organic food consumption and gluten-free diet, is there a link? Results in French adults without coeliac disease.
Perrin, L, Allès, B, Julia, C, Hercberg, S, Touvier, M, Lairon, D, Baudry, J, Kesse-Guyot, E
The British journal of nutrition. 2021;125(9):1067-1078
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Plain language summary
The gluten-free diet (GFD) is a medical response for people with coeliac disease, a systemic autoimmune disorder for which GFD is the only available effective treatment. The aim of this study was to compare the consumption of organic products (as a whole and by food group) in individuals (partially or totally) avoiding gluten or not, and their places of food purchases of organic food. Results indicate a positive association between gluten avoidance and contribution of organic food to the diet. A gradient was also observed with total avoiders consuming more of organic food than partial avoiders. This contribution was higher for all types of products, except milk and dairy products. Furthermore, the results appear consistent with the motives reported by individuals avoiding gluten. Authors conclude that their findings underline a strong positive correlation between gluten avoidance and organic food consumption.
Abstract
The rising popular belief that gluten is unhealthy has led to growth in gluten avoidance in people without coeliac disease. Little information is available on their dietary profiles and their dietary behaviours. Our aim was to compare the consumption of organic foods between gluten avoiders and non-avoiders, and their places of food purchase. We described their sociodemographic and dietary profiles. The study population included participants of the NutriNet-Santé cohort who completed both a food exclusion questionnaire and an organic semi-quantitative FFQ (n 23 468). Food intake and organic food consumption ratios were compared using multivariable adjusted ANCOVA models. Associations between gluten avoidance and organic food consumption as well as places of food purchase were investigated with multivariable logistic regression. Participants avoiding gluten were more likely to be women and had a healthier dietary profile. Organic food consumption was higher among gluten avoiders (48·50 % of total diet for total avoiders, 17·38 % for non-avoiders). After adjustments for confounders, organic food consumption and purchase in organic stores were positively associated with gluten avoidance: adjusted OR (aOR)Q5 v.Q1 organic food = 4·95; 95 % CI 3·70, 6·63 and aORorganic stores v.supermarkets = 1·82; 95 % CI 1·42, 2·33 for total avoiders. Our study highlights that individuals avoiding gluten are high organic consumers and frequently purchase their foods in organic stores which propose an extended offer of gluten-free food. Further research is needed to determine the underlying common motivations and the temporality of the dietary behaviours of healthy people avoiding gluten.
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The Effect of Gluten Free Diet on Components of Metabolic Syndrome: A Randomized Clinical Trial
Ehteshami, M, Shakerhosseini, R, Sedaghat, F, Hedayati, M, Eini-Zinab, H, Hekmatdoost, A
Asian Pacific journal of cancer prevention : APJCP. 2018;19(10):2979-2984
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Metabolic syndrome is a cluster of conditions related to cardiovascular disorders risk factors such as blood pressure, dyslipidaemia, hyperglycaemia, excess body fat around the waist and insulin resistance. The aim of this study was to assess the effects of a gluten-free diet on components of metabolic syndrome in patients diagnosed with metabolic syndrome. The study is a randomised control trial that recruited fifty subjects diagnosed with metabolic syndrome. Subjects were block randomised by gender into control and gluten-free diet groups. Results showed that a gluten-free diet induces significant reduction in waist circumference in comparison to control diet. Reduction in waist circumference without significant reduction in body weight may indicate preferential loss of abdominal fat. Furthermore, results indicate that a gluten-free diet improved glucose tolerance. Authors conclude that a gluten-free diet significantly improved some key features of metabolic syndrome including blood glucose and serum triglycerides.
Abstract
Background: This study aimed to assess the effects of Gluten free diet (GFD) on components of metabolic syndrome (MES). Materials and Methods: In this randomized clinical trial, 50 subjects diagnosed with MES were randomly divided into two groups (n=25). The first group received a GFD and the second group continued their regular diet. Biochemical markers of MES and blood pressure were measured before and after 8-week intervention. Results: Forty five subjects completed the study. A post-hoc comparison of the groups showed no effects of the GFD and control diet on LDL cholesterol, total cholesterol, fasting insulin, HOMA-IR, systolic and diastolic blood pressure levels. The GFD reduced fasting blood glucose, waist circumference (WC) and serum triglyceride concentration significantly compared with the control diet (p<0.05). Conclusion: Short-term GFD reduced WC and improved glycemic control and Triglyceride level in subjects with the metabolic syndrome.
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[Nursing and organizational development].
Donnenberg, OH, Locher, K
Tijdschrift voor ziekenverpleging. 1986;39(1):18-22
Plain language summary
The relationship between gluten exposure and diarrhoea-predominant irritable bowel syndrome (IBS-D) is not well understood. Non-celiac IBS-D patients who are positive for HLA-DQ2/8 genes associated with CD can show symptom improvement on a gluten-free diet (GFD). The aim of this 4-week parallel randomized controlled clinical trial in HLA-DQ2/8 positive and negative patients with IBS-D was to assess the effects of a gluten-containing diet (GCD) compared to a GFD on bowel function, gut transit, small bowel and colonic barrier functions. 45 patients were recruited from the Mayo clinic’s database of IBS suffers, and invited to participate. Patients with diagnosed CD were excluded. 22 patients were placed on the GCD (11 HLA-DQ2/8–negative and 11 HLA-DQ2/8–positive) and 23 on the GFD (12 HLA-DQ2/8−negative and 11 HLA-DQ2/8–positive). All meals and snacks were ingested or prepared in the Mayo Clinic. Patients were advised to eat only the foods provided by the study dieticians. Gluten-free and gluten-containing meals were prepared using the same macronutrient content (20% protein, 30% fat, 50% carb). Compliance to the diet was assessed by direct questioning by the dietitians and reported to be excellent. All patients were ingesting gluten in their diet prior to starting the study. At 4-weeks, a statistically significant decrease in stool frequency of subjects on GFD compared to subjects on GCD was seen. This effect was more pronounced in subjects who were HLA-DQ2 or 8 positive. There was no significant dietary effect on daily stool form, ease of passage or gastric emptying. The GCD was associated with higher small bowel permeability and lactulose:mannitol ratio. Small bowel permeability was greater in HLA-DQ2/8–positive than negative patients. No significant differences in colonic permeability were observed. The author concludes that this study provides mechanistic explanations for the observation that gluten withdrawal may improve patient symptoms in IBS. The data also partially explains that the biological effects of gluten were associated with HLA-DQ2 or 8 genotype. The relationship of dietary factors, innate and adaptive immune responses and mucosal interactions in IBS-D deserve further study. Further clinical studies evaluating the effects of gluten withdrawal in patients with IBS-D are needed.