Table 3.

Keyword clusters for the third stage (2016–2020).

Cluster ID	Cluster keywords	Representative keywords
0	Oxidative stress	Nonalcoholic fatty liver disease; oxidative stress; endothelium dysfunction; arterial stiffness; fatty pancreas nonalcoholic fatty liver disease; natural modulators; diabetes mellitus; hepatocellular carcinoma; arterial stiffness
1	Cardiovascular risk	Nonalcoholic fatty liver disease; metabolic syndrome; arterial stiffness; carotid intima-media thickness; postmenopausal women nonalcoholic fatty liver disease; cardiac arrhythmias; alcoholic liver disease; endocrine system; virus-associated fatty liver disease
2	Nonalcoholic fatty liver	Nonalcoholic fatty liver disease; hepatocellular carcinoma; nonalcoholic steatohepatitis; intrahepatic cholangiocarcinoma; bidirectional relationship nonalcoholic fatty liver disease; insulin resistance; fatty liver disease; virus-associated fatty liver disease; arterial stiffness
3	Nonalcoholic fatty liver disease	Nonalcoholic fatty liver disease; metabolic syndrome; carotid intima-media thickness; arterial stiffness; flow-mediated dilatation nonalcoholic fatty liver disease; fatty liver index; glomerular filtration rate; chronic kidney disease; controlled attenuation parameter
4	Vitamin E	Nonalcoholic fatty liver disease; nonalcoholic steatohepatitis; magnetic resonance; chronic renal failure; NAFLD activity score nonalcoholic fatty liver disease; diabetes mellitus; protein-coupled bile acid receptor-1; gallstone disease; magnetic resonance
5	PNPLA3	Nonalcoholic fatty liver disease; metabolic syndrome; diabetes mellitus; cardiovascular diseases; dietary supplements cardiovascular disease; arterial stiffness; aortic flow propagation velocity; systems biology; coronary artery disease
6	Gut microbiome	Insulin resistance; nonalcoholic fatty liver disease; cardiovascular effect; multisystemic disease; magnetic resonance imaging gut microbiome; mediterranean diet; western diet; vegetarian diet; liver steatosis

NAFLD = nonalcoholic fatty liver disease.