| AD | Atopic dermatitis |
| AhR | Aryl hydrocarbon receptor |
| ATG16L1 | Autophagy-related 16-like 1 |
| BSGS | Butyrylated Smilax glabra starch |
| CD | Crohn’s disease |
| CD4 | Cluster of differentiation 4 |
| DAMPs | Damage-associated molecular patterns |
| DNA | Deoxyribonucleic acid |
| FXR | Farnesoid X receptor |
| GI | Gastrointestinal |
| GWAS | Genome-wide association study |
| HR | Hazard ratio |
| HS | Hidradenitis suppurativa |
| IBD | Inflammatory bowel disease |
| IL-1 | Interleukin-1 |
| IL-4 | Interleukin-4 |
| IL-5 | Interleukin-5 |
| IL-10 | Interleukin-10 |
| IL-12 | Interleukin-12 |
| IL-13 | Interleukin-13 |
| IL-23 | Interleukin-23 |
| IL-23R | Interleukin-23 receptor |
| JAK | Janus kinase |
| LTB4 | Leukotriene B4 |
| Muc2 | Mucin 2 |
| NF-κB | Nuclear factor kappa-light-chain-enhancer of activated B cells |
| NOD2 | Nucleotide-binding oligomerization domain containing 2 |
| OR | Odds ratio |
| OVA | Ovalbumin |
| Reg3 | Regenerating family member 3 |
| RNA | Ribonucleic acid |
| SCFA | Short-chain fatty acid |
| SIBO | Small intestinal bacterial overgrowth |
| S1P | Sphingosine-1-phosphat |
| TET | Ten-eleven translocation |
| TGF-β | Transforming growth factor-beta |
| TGR5 | Takeda G protein-coupled receptor 5 |
| Th1 | Helper cell 1 |
| Th2 | Helper cell 2 |
| Th9 | Helper cell 9 |
| Th17 | Helper cell 17 |
| THIN | The health improvement network |
| TLR2 | Toll-like receptor 2 |
| TLR4 | Toll-like receptor 4 |
| TLR7 | Toll-like receptor 7 |
| TNF | Tumor necrosis factor |
| TNFα | Tumor necrosis factor-alpha |
| Tregs | Regulatory T cells |
| UC | Ulcerative colitis |
| UVB | Ultraviolet B |
| VDR | Vitamin D receptor |