| ANS | Autonomic nervous system |
| BF | Blood flow |
| CNS | Central nervous system |
| EE | Endurance exercise |
| EFSA | European Food Safety Authority |
| GB | Gut bowel |
| GI | Gastrointestinal |
| GM | Gut microbiota |
| GRAS | Generally Recognized as Safe |
| HA/P | Hemagglutinin/protease |
| HPA | Hypothalamic/pituitary/adrenal |
| 5-HT | Serotonin |
| ISSN | International Society of Sports Nutrition |
| LPS | Lipopolysaccharides |
| NT | Neurotransmitters |
| PAMPs | Pathogen-associated molecular patterns |
| PRR | Pathogen recognition receptors |
| QPS | Qualified Presumption of Safety |
| SCFAs | Short-chain fatty acids |
| TNF | Tumour necrosis factor |
| VN | Vagus nerve |
| ZOT | Zonula occludens toxin |