ASCA	Anti-Saccharomyces cerevisiae Antibodies
BCFAs	Branched-Chain Fatty Acids
CDAI	Crohn’s Disease Activity Index
CDED	Crohn’s Disease Exclusion Diet
CD	Crohn’s Disease
CTT	Colonic Transit Time
DAO	Diamine Oxidase
DSS	Dextran Sodium Sulfate
EEN	Exclusive Enteral Nutrition
GIT	Gastrointestinal Tract
H2S	Hydrogen Sulfide
HDC	Histidine Decarboxylase
HIT	Histamine Intolerance
HNMT	Histamine-N-Methyltransferase
HRs	Histamine Receptors
IBS	Irritable Bowel Syndrome
iHMP	Integrative Human Microbiome Project
LHD	Low-Histamine Diet
MHA	Methylhistamine
NH3	Ammonia
PBMCs	Peripheral Blood Mononuclear Cells
PLC	Phospholipase C
PLP	Pyridoxal-5′-phosphate
SCFAs	Short-Chain Fatty Acids
SNPs	Single Nucleotide Polymorphisms
TLRs	Toll-Like Receptors
UC	Ulcerative Colitis
UHPLC	Ultra-High-Performance Liquid Chromatography
VH	Visceral Hyperactivity
SIBO	Small Intestinal Bacterial Overgrowth