Oxidative stress biomarkers measured at experimental level of NAFLD/NASH include the reactive species (H2O2, nitrite/nitrate), lipid oxidation products (MDA, Lipid peroxide, 8-Isoprostanes, 4-HNE), protein damage products (Protein carbonyl, Dityrosine, Hydroxyproline, Nitrotyrosine), DNA damage product (8-OH-dG), and oxidative enzymes (CYP2E1, NADPH Oxidase, Xanthine Oxidase), as summarized in Table 8. Here, CYP2E1 is linked to metabolic dysfunction-associated steatotic liver disease.