ACTH	adrenocorticotropic hormone
AgRP	agouti-related peptide
a-MSH	alpha-melanocyte-stimulating hormone
AN	anorexia nervosa
ANBP	anorexia nervosa purging type
ANR	anorexia nervosa restricting type
ANS	autonomic nervous system
BAT	brown adipose tissue
BCFA	branched-chain fatty acids
β-EP	β-endorphin
β-LP	β-lipotropin
BMI	body mass index
CART	cocaine- and amphetamine-regulated transcript
CCK	cholecystokinin
ClpB	caseinolytic protease B
CRH	corticotropin-releasing hormone
CSF	cerebrospinal fluid
D2	dopamine D2 receptor
D3	dopamine D3 receptor
DSM	Diagnostic and Statistical Manual of Mental Disorders
E. Coli	Escherichia coli
FGF21	fibroblast growth factor 21
fMRI	functional magnetic resonance imaging
gAN	mice with the gut microbiota of patients with AN
GF	germ-free
GH	growth hormone
gHC	mice with the gut microbiota of healthy controls
GHSR	growth hormone secretagogue receptor
GIP	glucose-dependent insulinotropic peptide
GLP-1	glucagon-like peptide 1
GLP-2	glucagon-like peptide 2
GnRH	gonadotropin-releasing hormone
GUS	β-glucuronidase
HPA	hypothalamic–pituitary–adrenal (axis)
IBS	irritable bowel syndrome
IGF-1	insulin-like growth factor 1
IL-15	interleukin 15
IL-6	interleukin 6
KISS1R	kisspeptin receptor
LH	luteinizing hormone
MOR	Mu-opioid receptor
NA	noradrenaline
NPY	neuropeptide Y
OPRD	delta-opioid receptor
PNS	parasympathetic nervous system
POMC	pro-opiomelanocortin
PYY	peptide YY
SCFA	short-chain fatty acid
SNS	sympathetic nervous system
SPF	specific pathogen-free
STAT5	signal transducer and activator of transcription 5
T3	triiodothyronine
T4	thyroxine
TLR	toll-like receptors
TNF-α	tumor necrosis factor-alfa
TSH	thyroid-stimulating hormone
VTA	ventral tegmental area