TMD	Temporomandibular disorder
TMJ	Temporomandibular joint
CNS	Central Nervous System
GERD	Gastroesophageal reflux disease
IBS	Irritable Bowel Syndrome
SIBO	Small intestinal bacterial overgrowth
PTSD	Post-traumatic stress disorder
REM	Rapid eye movement
Non-REM SWS	Non-rapid eye movement slow-wave sleep
PPI	Proton pump inhibitor
SCFA	Short-Chain Fatty Acids
LPS	Lipopolysaccharides
GABA	Gamma-aminobutyric acid
LH	Luteinizing hormone
FSH	Follicle-stimulating hormone
HPA	Hypothalamic–pituitary–adrenal
MDD	Major depressive disorder
gdTcells	Gamma delta T-cells
CRP	C-reactive protein
ACTH	Adrenocorticotropic hormone
KP	Kynurenine pathway
Kyna	Kynurenic acid
Quin	Quinolinic acid
PRR	Pattern recognition receptors
Trp	Tryptophan
5-HT	serotonin