Dear Colleagues,

The gastrointestinal (GI) tract exists to process food intake, so it is not surprising that food ingestion is intimately linked to GI disease. However, there remains much to understand about dietary factors in the management of gastrointestinal diseases and disorders. Development of technologies in diagnostics and microbiology, along with rapid advancements in dietary assessment and a changing food environment, combine to create enormous potential for research aimed at improving the management of a wide range of complex and debilitating ‘gut’ conditions.

Dietary intake is strongly implicated in the induction of symptoms of functional gastrointestinal disorders, which are highly prevalent in developed countries and an increasing problem in developing countries. Assessment of both dietary intake and functional gastrointestinal disorder symptoms have historically relied on patient-reported measures, but advancements in dietary intake biomarkers and dietary assessment technologies show potential for improving understanding causal associations between food and induction of symptoms in these disorders.

Emerging evidence suggests gastrointestinal diseases such as coeliac disease, inflammatory bowel diseases, and gastroesophageal reflux overlap with and may be a part of the spectrum of functional disorders such as dyspepsia and irritable bowel syndrome. While the evidence for a gluten-free diet in the dietary management of coeliac disease is well established, many people who do not have coeliac disease are on a gluten-free diet for health reasons, but the risks versus benefits are poorly defined. The exponential increase in the availability of gluten-free foods, and advances in technology for identification and treatment of coeliac disease have implications for dietary management. The influence of diet–microbiome interactions is another fascinating area of discovery, which promises to revolutionize the application of dietary approaches in gut conditions.

In this Special Issue, we will highlight and consolidate emerging evidence in this fascinating and rapidly evolving field by sharing papers that focus on dietary assessment, oral or gut microbiome, novel foods, and new dietary management approaches in common gastrointestinal diseases and disorders.

Original research articles and reviews (systematic reviews and meta-analyses) are welcome.

Dr. Kerith Duncanson
Prof. Nicholas Talley
Guest Editors

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

• Functional gastrointestinal disorder
• Diet
• Microbiome
• Coeliac