| BMI | body mass index |
| CB1 | cannabinoid receptor 1 |
| CVD | cardiovascular disease |
| DHA | docosahexaenoic acid |
| DMB | 3,3-dimethyl-1-butanol |
| eCB | endocannabinoid |
| EPA | eicosapentaenoic acid |
| FMT | fecal microbial transplantation |
| FODMAP | fermentable oligo-, di-, mono-saccharides and polyols |
| FOS | fructo-oligosaccharide |
| GABA | γ-aminobutyric acid |
| GI | gastrointestinal |
| GOS | galacto-oligosaccharide |
| GPCR | G-protein coupled receptor |
| GPR109A | niacin receptor 1 |
| GPR41 | free fatty acid receptor 3 |
| HR | hazard ratio |
| HDL | high-density lipoprotein |
| IBD | inflammatory bowel disease |
| IBS | irritable bowel syndrome |
| IBS-C | IBS with predominant constipation |
| IBS-D | IBS with predominant diarrhea |
| IBS-M | IBS with alternating bowel habits |
| KD | ketogenic diet |
| LDL | low-density lipoprotein |
| LPS | lipopolysaccharide (endotoxin) |
| NAS | non-caloric artificial sweetener |
| NCGS | non-celiac gluten sensitivity |
| P | probability value |
| PPAR-γ | peroxisome proliferator-activated receptor gamma |
| PPI | proton pump inhibitor |
| PUFA | polyunsaturated fatty acid |
| R | Pearson correlation coefficient |
| RYGB | Roux-en-Y gastric bypass |
| SCD | specific carbohydrate diet |
| SCFA | short-chain fatty acid |
| sdLDL | small dense low-density lipoprotein particle |
| SGLT1 | sodium glucose cotransporter-1 |
| SIBO | small intestinal bacterial overgrowth |
| THC | tetrahydrocannabinol |
| TMA | trimethylamine |
| TMAO | trimethylamine N-oxide |
| TNF | tumor necrosis factor |
| T2D | type 2 diabetes |