| AhR | Aryl hydrocarbon receptor |
| CD | Crohn’s disease |
| CDI | Clostridium difficile infection |
| CRC | Colorectal cancer |
| FMT | Fecal microbiota transplantation |
| IBD | Inflammatory bowel disease |
| MS | Multiple sclerosis |
| RA | Rheumatoid arthritis |
| SCFAs | Short-chain fatty acids |
| SIFO | Small intestine fungal overgrowth |
| T2D | Type 2 diabetes |
| Tregs | Regulatory T cells |
| UC | Ulcerative colitis |