IF	Intermittent fasting
TRE	Time-restricted eating
ISF	Islamic Sunnah fasting
NMA	Network meta-analysis
RCTs	Randomized controlled trials
ADF	Alternate-day fasting
BMI	Body mass index
HbA1c	Hemoglobin A1c
LDL	Low-density lipoprotein
MMSE	Mini-Mental State Examination
MoCA	Montreal Cognitive Assessment
RAVLT	Rey Auditory Verbal Learning Test
MAPS	Memory and Aging Performance Scale
NIH	National Institutes of Health
PICOS	Population, Intervention, Comparison, Outcomes, Study design
PRISMA	Preferred Reporting Items for Systematic Reviews and Meta-Analyses
PROSPERO	International Prospective Register of Systematic Reviews
MD	Mean difference
RoB 2.0	Risk of Bias 2.0
ROBINS-I	Risk Of Bias In Non-randomized Studies of Interventions
SUCRA	Surface Under the Cumulative Ranking curve
CINeMA	Confidence In Network Meta-Analysis
CI	Confidence interval
HLD	Healthy living diet
UD	Usual diet
GDS	Geriatric Depression Scale
POMS	Profile of Mood States
GAD-7	Generalized Anxiety Disorder-7
ISI	Insomnia Severity Index
OR	Odds ratio
AST	Aspartate aminotransferase
ALT	Alanine aminotransferase
MDA	Malondialdehyde
SOD	Superoxide dismutase