| ADA | American Diabetes Association |
| BCAA | branch chained amino acids |
| BMI | Body Mass Index |
| BMR | Basal Metabolic Rate |
| CI | Confidence Interval |
| HbA1c | Hemoglobin A1c |
| ImP | Imidazole Propionate |
| mOTU | molecular Operational Taxinomical Unit |
| OGTT | Oral Glucose Tolerance Test |
| OR | Odds Ratio |
| OTU | Operational Taxinomical Unit |
| pre-T2D | Pre-Diabetes |
| RPAQ | Recent Physical Activity Questionnaire |
| T2D | Type 2 Diabetes |
| TMA | Trimethylamines |
| TMAO | Trimethylamine N-oxide |