5-HT	serotonin
Ach	acetylcholine
BMI	body mass index
CD	celiac disease
CGRP	calcitonin gene-related peptide
CNS	central nervous system
CRH	corticotrophin-releasing hormone
CTX	cortex
CSD	cortical spreading depression
DASH	Dietary Approaches to Stop Hypertension
DMV	dorsal motor nucleus of the vagus
eNOS	endothelial nitric oxide synthase
GABA	gamma-aminobutyric acid
GI	gastrointestinal
hTh	hypothalamus
IBD	inflammatory bowel disease
IBS	irritable bowel syndrome
IL	interleukin
LC	locus coeruleus
LP	lateral posterior nucleus
LPS	lipopolysaccharides
MIND	Mediterranean-DASH Intervention for Neurodegenerative Delay
NKA	neurokinin A
NO	nitric-oxide
NPY	neuropeptide Y
PACAP	pituitary adenylate cyclase-activating polypeptide
PAG	periaqueductal grey matter
PN	personalized or precision nutrition
SCFAs	short-chain fatty acids
SP	substance P
SPG	sphenopalatine ganglion
SpV	spinal trigeminal nucleus caudalis
SSN	superior salivatory nucleus
TCC	trigeminocervical complex
TG	trigeminal ganglion
Th	thalamus
TNC	trigeminal nucleus caudalis
TNF-α	tumor necrosis factor-α
V1	ophthalmic nerve
V2	maxillary nerve
V3	mandibular nerve
VIP	vasoactive intestinal peptide
VPL	ventral posterolateral nucleus
VPM	ventral posteromedial nucleus