AANAT	Serotonin N-acetyltransferase
AMDR	Acceptable macronutrient distribution range
BBB	Blood brain barrier
BDHQ	Brief diet history questionnaire
CD	Cannot be determined
CHO	Dietary carbohydrate
CS	Cross-sectional studies
DHQ	Dietary History Questionnaires
E%	Percentage of energy intake
ER	Energy restricted
FAA	Food anticipatory activity
FAO	Food and Agriculture Organization of the United Nations
FAT	Dietary fat
FFQ	Food frequency questionnaire
GSS	Global sleep score
LNAA	Large neutral amino acids
NA	Not applicable
NCD	Non-communicable diseases
NHLBI	National Heart, Lung and Blood Institute
NR	Not reported
NREM	Non-rapid eye movement
NSF	National Sleep Foundation
PRO	Dietary protein
PRO:CHO ratio	Protein: carbohydrate ratio
PSQI	Pittsburgh Sleep Quality Index
REM	Rapid eye movement
RCT	Randomized controlled trial
SCN	Suprachiasmatic nucleus
SL	Sleep latency
SE%	Sleep efficiency
QACIS	Quality Assessment of Controlled Intervention Studies
QATOCC	Quality Assessment Tool for Observational Cohort and Cross-sectional Studies
WHO	World Health Organization