Energy-restricted anti-inflammatory diet resulted in significant weight loss (−7.1%, p < 0.001), in reducing the visceral adiposity (−22.3%, p < 0.001), metabolic (HOMA-IR, −15.5%; total cholesterol, −5.3%; LDL-C, −4.6%; triglycerides, −12.2%), and inflammatory biomarkers (hs-CRP, −29.5%; IL-6, −18.2%; TNF-α, −34.2%), with significant improvement of liver parameters (NAFLD-FLS, −143.4%; FLI, −14.3%; FIB-4, −2.5%). The gene discussed is TNF; the disease is metabolic dysfunction-associated steatotic liver disease.