| ATIs | Amylase trypsin inhibitor |
| AGAs | Anti-gliadin antibodies |
| AUC | Area under the curve |
| CI | Confidential interval |
| CLE | Confocal laser endomicroscopy |
| CD | Celiac disease |
| DGBI | Disorders of the gut–brain interaction |
| DPBC-C | Double blind placebo-controlled challenge |
| ECP | Eosinophil cationic protein |
| FCP | Fecal calprotectin |
| FD | Functional dyspepsia |
| FODMAPs | Fermentable oligosaccharides, disaccharides, monosaccharides, and polyols |
| FS | Fermented sourdough |
| FY | Fermented yeast |
| GFD | Gluten-free diet |
| GI | Gastrointestinal |
| GIPs | Gluten immunogenic peptides |
| GSRS | Gastrointestinal symptom rating scale |
| HCs | Healthy controls |
| HLA | Human leukocyte antigen |
| HR-QoL | Health-related quality of life |
| IBS | Irritable bowel syndrome |
| IBS-D | Diarrhea-predominant IBS |
| IBS-SSS | IBS Severity Scoring System |
| IEL | Intraepithelial lymphocytes |
| IQR | Interquartile range |
| KIRs | Killer immunoglobulin-like receptors |
| NCGS | Non-celiac gluten sensitivity |
| NCWS | Non-celiac wheat sensitivity |
| NCGWS | Non-celiac gluten/wheat sensitivity |
| NDI | Nepean Dyspepsia Index |
| NGAL/LCN2 | Neutrophil gelatinase-associated lipocalin 2 |
| QoL | Quality of life |
| RCT | Randomized controlled trial |
| RFD | Refractory functional dyspepsia |
| SCFA | Short-chain fatty acid |
| SCI | Sleep condition indicator |
| SCL-90 | Symptom CheckList-90 |
| SF-36 | Short Form health survey-36 |
| VAS | Visual analog scale |
| WA | Wheat allergy |
| WFD | Wheat-free diet |
| WGA | Wheat germ agglutinins |
| WMC | Wireless motility and pH capsule |