| RWL | rapid weight loss |
| URTI | upper respiratory tract infections |
| ROS | reactive oxygen species |
| NKG2D | natural killer group 2, member D |
| HPA | hypothalamic–pituitary–adrenal |
| sIgA | secretory immunoglobulin A |
| NK | natural killer |
| TNF | tumor necrosis factor |
| IL | interleukin |
| ACTH | adrenocorticotropic hormone |
| IFN | interferon |
| NADPH | nicotinamide adenine dinucleotide phosphate |
| ATP | adenosine triphosphate |
| TGF | transforming growth factors |
| APR | acute-phase response |
| APPs | acute-phase proteins |
| β2-AR | β2-adrenergic receptors |
| CR | caloric restriction |
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