BAs	Bile Acids
BDNF	Brain-Derived Neurotrophic Factor
Foxp3+	Forkhead Box P3
FFA2	Free Fatty Acid Receptor 2
FODMAP	Fermentable Oligosaccharides, Disaccharides, Monosaccharides And Polyols
IBS	Irritable Bowel Syndrome
IBS-C	Irritable Bowel Syndrome Predominant Constipation
IBS-D	Irritable Bowel Syndrome Predominant Diarrhea
IBS-M	Irritable Bowel Syndrome Mixed Bowel Habits
IDO	indoleamine-2,3-dioxygenase
GABA	Gamma-Aminobutyric Acid
GI	Gastrointestinal
GPR43	G-Protein Coupled Receptor 43
GRID2IP	Glutamate Receptor, Ionotropic, Delta 2 Interacting Protein
HDC	Histidine Decarboxylase Enzyme
H1	Histamine Receptor 1
KDELR2	Endoplasmic Reticulum Protein Retention Receptor 2
NF-κB	Factor-Kappa B
PAME	Palmitic Acid Methyl Ester
PDMs	Probiotic-Derived Metabolites
SCFAs	Short-Chain Fatty Acids
TNFSF	Tumor Necrosis Factor Superfamily
Trp	Tryptophan
TRPV1	Transient Receptor Potential Channel V1
VDR	Vitamin D Receptor