5xFAD	Five familial Alzheimer’s disease mutation mouse model
6-OHDA	6-hydroxydopamine
α-syn or αSN	Alpha-synuclein
AD	Alzheimer’s disease
Akt	Protein kinase B
AMPK	Adenosine monophosphate activated protein kinase
APP/PS1	Amyloid precursor protein and presenilin 1 transgenic mouse model
APP	Amyloid precursor protein
ATP	Adenosine triphosphate
Aβ	Amyloid beta
BBB	Blood–brain barrier
BDNF	Brain-derived neurotrophic factor
C. elegans	Caenorhabditis elegans
COX	Cyclooxygenase
CREB	cAMP response element binding protein
ERβ	Estrogen receptor beta
EVOO	Extra virgin olive oil
HO-1	Heme oxygenase 1
HT	Hydroxytyrosol
M-OHAT	Modified Office for Health Assessment and Translation
Nrf2	Nuclear factor erythroid 2-related factor 2
OC	Oleocanthal
OLE	Oleuropein
PD	Parkinson’s disease
pE3-Aβ	Pyroglutamylated amyloid beta
PRISMA	Preferred Reporting Items for Systematic Reviews and Meta-Analyses
PROSPERO	Prospective Register of Systematic Reviews
RoB	Risk of bias
ROS	Reactive oxygen species
SYRCLE	Systematic Review Centre for Laboratory Animal Experimentation
TgCRND8	Transgenic mouse model overexpressing mutant amyloid precursor protein
TgSwDI	Swedish Dutch Iowa mutant amyloid precursor protein mouse model
ToxR	Toxicological data reliability