For this purpose, parameters related to liver morphological characteristics and levels of serum transaminases, the metabolic syndrome (serum glucose, insulin, HOMA index of insulin resistance, cholesterol, and triglyceride levels), oxidative stress (glutathione status and protein carbonylation), inflammation [serum levels of tumor necrosis factor (TNF)- α, interleukin (IL)-1β, and IL-6] were determined, in relation to liver total fat content and fatty acid composition. The gene discussed is TNF; the disease is Insulin resistance.