| ADs | Autoimmune diseases |
| AI | Artificial intelligence |
| BMI | Body mass index |
| CD | Crohn’s disease |
| CFU | Colony forming unit |
| CRP | C-reactive protein |
| DCs | Dendritic cells |
| DMARDs | Disease-modifying antirheumatic drugs |
| EGFR | Epidermal growth factor receptor |
| ESR | Erythrocyte sedimentation rate |
| FMT | Fecal microbiota transplantation |
| GSH | Glutathione |
| HbA1c | Hemoglobin A1c |
| IBD | Inflammatory bowel disease |
| IL-1β | Interleukin-1 beta |
| IL-6 | Interleukin-6 |
| IL-8 | Interleukin-8 |
| IL-10 | Interleukin-10 |
| IL-12 | Interleukin-12 |
| IL-17 | Interleukin-17 |
| IL-23 | Interleukin-23 |
| IQR | Interquartile range |
| LPS | Lipopolysaccharide |
| MAPK | Mitogen-activated protein kinase |
| MAMPs | Microbial-associated molecular patterns |
| MDA | Malondialdehyde |
| MHC | Major histocompatibility complex |
| ML | Machine learning |
| MS | Multiple sclerosis |
| NF-κB | Nuclear factor kappa-light-chain-enhancer of activated B cells |
| NOD | Non-obese diabetic (mouse model) |
| NO | Nitric oxide |
| PBC | Primary biliary cholangitis |
| PRISMA | Preferred Reporting Items for Systematic Reviews and Meta-Analyses |
| RA | Rheumatoid arthritis |
| ROS | Reactive oxygen species |
| SCFA | Short-chain fatty acid |
| SLE | Systemic lupus erythematosus |
| SMD | Standardized mean difference |
| TAC | Total antioxidant capacity |
| T1DM | Type 1 diabetes mellitus |
| TGF-β | Transforming growth factor-beta |
| TLR | Toll-like receptor |
| TNF-α | Tumor necrosis factor-alpha |
| UC | Ulcerative colitis |