Ace-K	Acesulfame potassium
AgRP	Agouti-related peptide
ARC	Arcuate nucleus
BBB	Blood–brain barrier
BNST	Bed nucleus of the stria terminalis
BOLD	Blood-oxygen-level-dependent
CCK	Cholecystokinin
CNS	Central nervous system
DA	Dopamine/dopaminergic
DAT	Dopamine transporter
DS	Dorsal striatum
ENS	Enteric nervous system
FFAR2/GPR41	Free fatty acid receptor 2
FFAR3/GPR43	Free fatty acid receptor 3
fMRI	Functional magnetic resonance imaging
FOS	Fructo-oligosaccharides
GABA	Gamma-aminobutyric acid
GBA	Gut–brain axis
GF	Germ-free
GLP-1	Glucagon-like peptide-1
GM	Gut microbiota
GRAS	Generally Recognized as Safe
HFD	High-fat diet
LH	Lateral hypothalamus
LPS	Lipopolysaccharide
L-DOPA	L-3,4-dihydroxyphenylalanine
MCH	Melanin-concentrating hormone
NAc	Nucleus accumbens
NCSs	Non-caloric sweeteners/Non-nutritive sweeteners
NPY	Neuropeptide Y
NTS	Neurotensin
OFC	Orbitofrontal cortex
PFC	Prefrontal cortex
POMC	Pro-opiomelanocortin
PULs	Polysaccharide utilization loci
PYY	Peptide YY
SCFAs	Short-chain fatty acids
SERT	Serotonin transporter
TH	Tyrosine hydroxylase
VTA	Ventral tegmental area
VS	Ventral striatum
VMH	Ventromedial hypothalamus
WD	Westernized diet