GPT and alcoholic fatty liver disease: These outcome data were analysed with the random-effects model, and compared to control group for non-alcoholic fatty liver disease, ginger supplementation was associated with significantly reduced ALT (SMD=-0.43; 95% CI=-0.85 to -0.02; P=0.04) with low heterogeneity among the studies (I2=44%, heterogeneity P=0.17, Figure 2), but showed no obvious influence on AST (SMD=-0.66; 95% CI=-0.81 to 2.12; P=0.38) with significant heterogeneity among the studies (I2=95%, heterogeneity P=0.38, Figure 3).