Effects of dietary walnuts on hepatic steatosis and metabolic parameters in mice fed HFD for 6 weeks. (A) Representative liver histology with H&E staining, (B) NASH score, (C) concentration of hepatic TG, (D) serum ALT, and (E) serum leptin of experimental mice. The results of (F) glucose tolerance test (GTT), (G) glucose area under the curve (AUC) during GTT, (H) insulin tolerance test (ITT), and (I) glucose AUC during ITT are shown. All results are presented as mean ± SEM (n=6/group). Significance was determined by one-way ANOVA with the Tukey’s post hoc test (P<0.05) and is denoted by different letters.