Alcohol feeding significantly increased hepatic triglyceride (PF 25.2 ± 4.1 nmol/mg vs. AF 40.1 ± 8.6 nmol/mg, p < 0.01) and free fatty acid (PF 5.3 ± 2.5 nmol/mg vs. 17.7 ± 6.9 nmol/mg, p < 0.05) levels, whereas IFN-γ treatment did not have an impact on lipid compositions in the liver (42.6 ± 6.8 nmol/mg TG, p = 0.647, and 19.6 ± 4.9 nmol/mg FFAs, p = 0.329). Here, IFNG is linked to atrial fibrillation.