Consumption of ACNs was related to a decrease in AST concentrations in healthy (WMD = −4.325 U/L, 95% CI = −8.516 to −0.134, p = .043; I2 = 74.602; Q statistics (p) = .047) versus unhealthy (liver disease: WMD = −0.608 U/L, 95% CI = −3.510 to 2.295, p = .681; I2 = 00.00; Q statistics (p) = .332; other disease: WMD = −1.385 U/L, 95% CI = −3.792 to 1.021, p = .259; I2 = 88.720; Q statistics (p) < .0001) participants (Table 5). This evidence concerns the gene GOT1 and liver disorder.