5HT1A	Serotonin 1A receptor
ACTH	Adrenocorticotropic hormone
BBB	Blood–brain barrier
BDNF	Brain-derived neurotrophic factor
CNS	Central nervous system
CREB	Cyclic AMP-responsive element-binding protein
CRF	Corticotropin-releasing factor
EVOO	Extra virgin olive oil
F/B	Firmicutes/bacteroides
FA	Ferulic acid
GAP-43	Growth-associated protein 43
GPR43	G protein-coupled receptor 43
H2S	Hydrogen sulfide
HDAC	Histone deacetylase
HF	High-fat
HPA	Hypothalamic–pituitary–adrenal axis
HS	High-sucrose
IBD	Inflammatory bowel disease
LPS	Lipopolysaccharide
MD	Mediterranean diet
MDA	malondialdehyde
MUFA	Monounsaturated fatty acids
NTD	Neural tube defects
PSD95	Post-synaptic density protein 95
PUFA	Polyunsaturated fatty acids
PVN	Paraventricular nucleus
ROS	Reactive oxygen species
RS	Resistant starch
SAM	S-adenosyl-methionine
SCFA	Short-chain fatty acid
SFA	Saturated fat
SYN	Synapsin I
SYS	Synaptophysin
TLR4	Toll-like receptor 4
TPH2	Tryptophan hydroxylase 2
VDR	Vitamin D receptor
WD	Western diet
ZO-1	Zonula-occludens-1