Acetyl-CoA	Acetyl coenzyme A
LPS	Lipopolysaccharides
MAMPs	Microbial-associated molecular patterns
TLR	Toll-like receptors
CRP	C-reactive protein
NF-κB	Nuclear factor kappa-B
TNF-α	Tumor necrosis factor-alpha
IL	Interleukin
GPR	G protein-coupled receptor
FM	Fibromyalgia
SCFA	Short-chain fatty acid
FMT	Fecal microbiota transplantation
ME/CFS	Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
OA	Osteoarthritis
CWP	Chronic Widespread Pain
GABA	Gamma-Aminobutyric Acid
BA	Bile acids
FXR	Farnesoid X Receptor
TGR5	Takeda G-Protein-Coupled Receptor 5
NMDA	N-methyl-D-aspartate
JAK2	Janus kinase 2
STAT3	Signal transducer and activator of transcription 3
COX2	Cyclooxygenase-2
PGE2	Prostaglandin E2
CCL2	C–C motif chemokine ligand 2
CXCL1	C–X–C motif chemokine ligand 1
Ahr	Aryl hydrocarbon receptor
ACTH	Adrenocorticotropic hormone
CRH	Corticotrophin-releasing hormone
NLRs	Nucleotide-binding oligomerization domain-like receptors
PRRs	Pattern recognition receptors
BBB	Blood–brain barrier
HDAC	Histone deacetylase
RA	Rheumatoid arthritis
PAMPs	Pathogen-associated molecular patterns
MAPK	Mitogen-activated protein kinase
TRP	Transient receptor potential
MR	Mendelian randomization
HPA	Hypothalamic–pituitary–adrenal
TRPA1	TRP ankyrin 1