| AhR | Aryl Hydrocarbon Receptor |
| ALT | Alanine Transaminase |
| ASV | Amplicon Sequence Variant |
| AST | Aspartate Transaminase |
| BCFAs | Branched-Chain Fatty Acids |
| BMI | Body Mass Index |
| DNA | Deoxyribonucleic Acid |
| FAAs | Free Amino Acids |
| GABA | γ-Aminobutyric Acid |
| GC-MS | Gas Chromatography Mass Spectrometry |
| GGT | Gamma-Glutamyl Transferase |
| GI | Gastrointestinal |
| HDL | High-Density Lipoprotein |
| IS | Internal Standard |
| LDL | Low-Density Lipoprotein |
| OPLS-DA | Orthogonal Partial Least Squares Discriminant Analysis |
| PCA | Principal Component Analysis |
| PERMANOVA | Permutational Multivariate Analysis of Variance |
| PL | Placebo |
| PLS-DA | Partial Least Squares Discriminant Analysis |
| QC | Quality Control |
| RI | Run-in |
| RF-ML | Random Forest Machine Learning |
| rRNA | Ribosomal Ribonucleic Acid |
| SCFAs | Short-Chain Fatty Acids |
| SIM | Selective Ion Monitoring |
| T0 | Baseline Time-Point |
| T1 | Post-Intervention Time-Point |
| TC | Total Cholesterol |
| TG | Triglycerides |
| TR | Treatment |
| UC | Ulcerative Colitis |
| VAS | Visual Analog Scale |
| VOCs | Volatile Organic Compounds |
| WO | Wash-out |