VLCKDs	very low-calorie ketogenic diets
EASO	European Association for the Study of Obesity
SIE	Italian Society of Endocrinology
T2DM	type 2 diabetes mellitus
NAFLD	non-alcoholic fatty liver disease
NYHA	New York Heart Association
PCOS	polycystic ovary syndrome
SGLT	sodium-dependent glucose cotransporters
KDs	ketogenic diets
HGS	handgrip strength
hs-CRP	high-sensitivity C-reactive protein
BMI	body mass index
BIA	bioelectrical impedance analysis
WC	waist circumference
ESPEN	European Society of Parenteral and Enteral Nutrition
R	resistance
Xc	reactance
CV	coefficient of variation
PhA	phase angle
SD	standard deviation
FM	fat mass
FFM	free fat mass